Fix some style warnings from cppcheck

Unused variable, std::algorithms instead of raw for-loops.
There should be no observeable difference in behaviour.

Reported-By: cppcheck
Gbp-Dch: Ignore

4 files changed, 22 insertions, 18 deletions

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index 58bd6475e..a108eb213 100644
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -2025,7 +2025,6 @@ void pkgAcqMetaClearSig::Failed(string const &Message,pkgAcquire::MethodConfig c
 	  * they would be considered as trusted later on */
 	 string const FinalRelease = GetFinalFileNameFromURI(DetachedDataTarget.URI);
 	 string const PartialRelease = GetPartialFileNameFromURI(DetachedDataTarget.URI);
-	 string const FinalReleasegpg = GetFinalFileNameFromURI(DetachedSigTarget.URI);
 	 string const FinalInRelease = GetFinalFilename();
 	 Rename(DestFile, PartialRelease);
 	 TransactionManager->TransactionStageCopy(this, PartialRelease, FinalRelease);
@@ -2586,14 +2585,18 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile)	/*{{{*/
       return false;
    }
 
-   for (auto const &patch: available_patches)
-      if (patch.result_hashes.usable() == false ||
-	    patch.patch_hashes.usable() == false ||
-	    patch.download_hashes.usable() == false)
+   {
+      auto const patch = std::find_if(available_patches.cbegin(), available_patches.cend(), [](auto const &patch) {
+	 return not patch.result_hashes.usable() ||
+		not patch.patch_hashes.usable() ||
+		not patch.download_hashes.usable();
+      });
+      if (patch != available_patches.cend())
       {
-	 strprintf(ErrorText, "Provides no usable hashes for %s", patch.file.c_str());
+	 strprintf(ErrorText, "Provides no usable hashes for %s", patch->file.c_str());
 	 return false;
       }
+   }
 
    // patching with too many files is rather slow compared to a fast download
    unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0);
@@ -2655,13 +2658,15 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile)	/*{{{*/
 	 return false;
       std::string const PartialFile = GetPartialFileNameFromURI(Target.URI);
       std::string const PatchedFile = GetKeepCompressedFileName(PartialFile + "-patched", Target);
-      if (RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PartialFile) == false ||
-	    RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PatchedFile) == false)
+      if (not RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PartialFile) ||
+	  not RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PatchedFile))
 	 return false;
-      for (auto const &ext : APT::Configuration::getCompressorExtensions())
       {
-	 if (RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PartialFile + ext) == false ||
-	       RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PatchedFile + ext) == false)
+	 auto const exts = APT::Configuration::getCompressorExtensions();
+	 if (not std::all_of(exts.cbegin(), exts.cend(), [&](auto const &ext) {
+		return RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PartialFile + ext) &&
+		       RemoveFileForBootstrapLinking(ErrorText, CurrentPackagesFile, PatchedFile + ext);
+	     }))
 	    return false;
       }
       std::string const Ext = Final.substr(CurrentPackagesFile.length());
diff --git a/apt-pkg/acquire.cc b/apt-pkg/acquire.cc
index 776c82b3b..dd7dedb03 100644
--- a/apt-pkg/acquire.cc
+++ b/apt-pkg/acquire.cc
@@ -1378,8 +1378,6 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
    int fd = _config->FindI("APT::Status-Fd",-1);
    if(fd > 0)
    {
-      ostringstream status;
-
       unsigned long long ETA = 0;
       if(CurrentCPS > 0 && TotalBytes > CurrentBytes)
          ETA = (TotalBytes - CurrentBytes) / CurrentCPS;
diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index 997ef7423..931df9f6c 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -32,6 +32,7 @@
 #include <algorithm>
 #include <fstream>
 #include <iterator>
+#include <numeric>
 #include <sstream>
 #include <stack>
 #include <string>
@@ -1149,10 +1150,10 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectio
 bool ReadConfigDir(Configuration &Conf,const string &Dir,
 		   bool const &AsSectional, unsigned const &Depth)
 {
-   bool good = true;
-   for (auto const &I : GetListOfFilesInDir(Dir, "conf", true, true))
-      good = ReadConfigFile(Conf, I, AsSectional, Depth) && good;
-   return good;
+   auto const files = GetListOfFilesInDir(Dir, "conf", true, true);
+   return std::accumulate(files.cbegin(), files.cend(), true, [&](bool good, auto const &file) {
+      return ReadConfigFile(Conf, file, AsSectional, Depth) && good;
+   });
 }
 									/*}}}*/
 // MatchAgainstConfig Constructor					/*{{{*/
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 336f979d6..b83a4bad7 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1781,7 +1781,7 @@ class APT_HIDDEN ZstdFileFdPrivate : public FileFdPrivate
 #ifdef HAVE_ZSTD
    ZSTD_DStream *dctx;
    ZSTD_CStream *cctx;
-   size_t res;
+   size_t res = 0;
    FileFd backend;
    simple_buffer zstd_buffer;
    // Count of bytes that the decompressor expects to read next, or buffer size.