Bug#213311: segfault (Label vs. Origin)

[Koblinger Egmont <egmont@uhulinux.hu>]

Package: apt
Version: 0.5.14

"apt-get upgrade" may give a segfault for certain Release + preferences
combinations. Trivial one-line patch is attached, please apply.

diff -Naurd apt-0.5.13.orig/apt-pkg/cacheiterators.h apt-0.5.13/apt-pkg/cacheiterators.h
--- apt-0.5.13.orig/apt-pkg/cacheiterators.h	2001-04-29 07:13:51.000000000 +0200
+++ apt-0.5.13/apt-pkg/cacheiterators.h	2003-09-28 23:55:48.000000000 +0200
@@ -289,7 +289,7 @@
    inline const char *Component() const {return File->Component == 0?0:Owner->StrP + File->Component;};
    inline const char *Version() const {return File->Version == 0?0:Owner->StrP + File->Version;};
    inline const char *Origin() const {return File->Origin == 0?0:Owner->StrP + File->Origin;};
-   inline const char *Label() const {return File->Origin == 0?0:Owner->StrP + File->Label;};
+   inline const char *Label() const {return File->Label == 0?0:Owner->StrP + File->Label;};
    inline const char *Site() const {return File->Site == 0?0:Owner->StrP + File->Site;};
    inline const char *Architecture() const {return File->Architecture == 0?0:Owner->StrP + File->Architecture;};
    inline const char *IndexType() const {return File->IndexType == 0?0:Owner->StrP + File->IndexType;};