Bug#192458: Fix the segfault fixing the code of pins with local repository

[Otavio Salvador <otavio@debian.org>]

Hello,

The bellow patch a problem included in previous change for the entry
in changelog:

  * Fix origin pins for file:// uris.  Closes: #189014.

The previous fix was wrong and cause this.

Please include the fallowing like in changelog:

  * Fix the segfault while processing the /etc/apt/preferences
    file. Closes: 192458

The patch are bellow:

Index: apt-pkg/versionmatch.cc
===================================================================
RCS file: /cvs/deity/apt/apt-pkg/versionmatch.cc,v
retrieving revision 1.8
diff -u -r1.8 versionmatch.cc
--- apt-pkg/versionmatch.cc	24 Apr 2003 03:16:58 -0000	1.8
+++ apt-pkg/versionmatch.cc	8 May 2003 21:52:49 -0000
@@ -208,9 +208,14 @@
    
    if (Type == Origin)
    {
-      if (!strcmp(File.Archive(), "now"))	/* ignore local "status" file */
-	 return false;
-      return (OrSite == File.Site());		/* both strings match */
+      if (OrSite.empty() == false) {
+	 if (File->Site == 0 ||
+	     OrSite != File.Site())
+	    return false;
+      } else // so we are talking about file:// or status file
+	 if (strcmp(File.Site(),"") == 0 && File->Archive != 0) // skip the status file
+	    return false;
+      return OrSite == File.Site();
    }
    
    return false;


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