correct architecture detection for 'rc' packages for purge

We were already considering these cases, but the code was flawed, so
that packages changing architectures are incorrectly handled and hence
the wrong architecture is used to call dpkg with, so that dpkg says the
package isn't installed (which it isn't for the requested architecture).

Closes: 770898

1 files changed, 4 insertions, 12 deletions

diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 593875071..3fbda0552 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -201,18 +201,10 @@ pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
 {
    pkgCache::VerIterator Ver;
    for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
-   {
-      pkgCache::VerFileIterator Vf = Ver.FileList();
-      pkgCache::PkgFileIterator F = Vf.File();
-      for (F = Vf.File(); F.end() == false; ++F)
-      {
-         if (F && F.Archive())
-         {
-            if (strcmp(F.Archive(), "now")) 
-               return Ver;
-         }
-      }
-   }
+      for (pkgCache::VerFileIterator Vf = Ver.FileList(); Vf.end() == false; ++Vf)
+	 for (pkgCache::PkgFileIterator F = Vf.File(); F.end() == false; ++F)
+	    if (F->Archive != 0 && strcmp(F.Archive(), "now") == 0)
+	       return Ver;
    return Ver;
 }
 									/*}}}*/