update the changelog with a Closes tag for the newly reported all apt

essential issue

debian/changelog

@@ -1,12 +1,12 @@
-apt (0.9.1+nmu1) unstable; urgency=low
+apt (0.9.2) unstable; urgency=low
 
   [ David Kalnischkies ]
   * apt-pkg/deb/deblistparser.cc:
-    - only treat the native apt as essential by default
+    - only treat the native apt as essential by default (Closes: #669377)
   * apt-pkg/contrib/fileutl.cc:
     - redirect stderr from compressors to /dev/null
 
- -- David Kalnischkies <kalnischkies@gmail.com>  Thu, 19 Apr 2012 11:04:37 +0200
+ -- David Kalnischkies <kalnischkies@gmail.com>  Thu, 19 Apr 2012 15:52:59 +0200
 
 apt (0.9.1) unstable; urgency=low