debListParser: ParseDepends: Only query native arch if needed

This makes the code parsing architecture lists slower, but on
the other hand, improves the more generic case of reading
dependencies from Packages files.

1 files changed, 2 insertions, 1 deletions

diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index f3ab9d5d8..85bddcd10 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -562,8 +562,8 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
    Package.assign(Start,I - Start);
 
    // We don't want to confuse library users which can't handle MultiArch
-   string const arch = _config->Find("APT::Architecture");
    if (StripMultiArch == true) {
+      string const arch = _config->Find("APT::Architecture");
       size_t const found = Package.rfind(':');
       if (found != string::npos &&
 	  (strcmp(Package.c_str() + found, ":any") == 0 ||
@@ -609,6 +609,7 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
 
    if (ParseArchFlags == true)
    {
+      string const arch = _config->Find("APT::Architecture");
       APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false);
 
       // Parse an architecture