cppcheck complains about some possible speed improvements which could be

done on the mirco-optimazation level, so lets fix them:
 (performance) Possible inefficient checking for emptiness.
 (performance) Prefer prefix ++/-- operators for non-primitive types.

4 files changed, 9 insertions, 9 deletions

diff --git a/methods/ftp.cc b/methods/ftp.cc
index 97248f900..c2c485769 100644
--- a/methods/ftp.cc
+++ b/methods/ftp.cc
@@ -559,7 +559,7 @@ bool FTPConn::ExtGoPasv()
    string::const_iterator List[4];
    unsigned Count = 0;
    Pos++;
-   for (string::const_iterator I = Msg.begin() + Pos; I < Msg.end(); I++)
+   for (string::const_iterator I = Msg.begin() + Pos; I < Msg.end(); ++I)
    {
       if (*I != Msg[Pos])
 	 continue;
diff --git a/methods/gpgv.cc b/methods/gpgv.cc
index 960c06180..3ad3e8d84 100644
--- a/methods/gpgv.cc
+++ b/methods/gpgv.cc
@@ -213,21 +213,21 @@ bool GPGVMethod::Fetch(FetchItem *Itm)
          {
             errmsg += _("The following signatures were invalid:\n");
             for (vector<string>::iterator I = BadSigners.begin();
-		 I != BadSigners.end(); I++)
+		 I != BadSigners.end(); ++I)
                errmsg += (*I + "\n");
          }
          if (!WorthlessSigners.empty())
          {
             errmsg += _("The following signatures were invalid:\n");
             for (vector<string>::iterator I = WorthlessSigners.begin();
-		 I != WorthlessSigners.end(); I++)
+		 I != WorthlessSigners.end(); ++I)
                errmsg += (*I + "\n");
          }
          if (!NoPubKeySigners.empty())
          {
              errmsg += _("The following signatures couldn't be verified because the public key is not available:\n");
             for (vector<string>::iterator I = NoPubKeySigners.begin();
-		 I != NoPubKeySigners.end(); I++)
+		 I != NoPubKeySigners.end(); ++I)
                errmsg += (*I + "\n");
          }
       }
diff --git a/methods/http.cc b/methods/http.cc
index 13f9cbe06..65a0cbbb7 100644
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -402,10 +402,10 @@ ServerState::RunHeadersResult ServerState::RunHeaders()
       if (Debug == true)
 	 clog << Data;
       
-      for (string::const_iterator I = Data.begin(); I < Data.end(); I++)
+      for (string::const_iterator I = Data.begin(); I < Data.end(); ++I)
       {
 	 string::const_iterator J = I;
-	 for (; J != Data.end() && *J != '\n' && *J != '\r';J++);
+	 for (; J != Data.end() && *J != '\n' && *J != '\r'; ++J);
 	 if (HeaderLine(string(I,J)) == false)
 	    return RUN_HEADERS_PARSE_ERROR;
 	 I = J;
@@ -1325,7 +1325,7 @@ int HttpMethod::Loop()
                StopRedirects = true;
             else
             {
-               for (StringVectorIterator I = R.begin(); I != R.end(); I++)
+               for (StringVectorIterator I = R.begin(); I != R.end(); ++I)
                   if (Queue->Uri == *I)
                   {
                      R[0] = "STOP";
diff --git a/methods/mirror.cc b/methods/mirror.cc
index 713dc211a..565df5327 100644
--- a/methods/mirror.cc
+++ b/methods/mirror.cc
@@ -107,7 +107,7 @@ bool MirrorMethod::Clean(string Dir)
 	 continue;
 
       // see if we have that uri
-      for(I=list.begin(); I != list.end(); I++)
+      for(I=list.begin(); I != list.end(); ++I)
       {
 	 string uri = (*I)->GetURI();
 	 if(uri.find("mirror://") != 0)
@@ -330,7 +330,7 @@ string MirrorMethod::GetMirrorFileName(string mirror_uri_str)
    vector<metaIndex *>::const_iterator I;
    pkgSourceList list;
    list.ReadMainList();
-   for(I=list.begin(); I != list.end(); I++)
+   for(I=list.begin(); I != list.end(); ++I)
    {
       string uristr = (*I)->GetURI();
       if(Debug)