lots of cppcheck fixes

diff --cc debian/changelog
index 489960912fc3e04416ed6dcb8e0f0e776783009c,489960912fc3e04416ed6dcb8e0f0e776783009c..d44d0aaa281a8977ea4b5fa72fd41a0cb415bdb9
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,5 -1,5 +1,6 @@@
  apt (0.8.15.5.6) UNRELEASED; urgency=low
  
++  [ Michael Vogt ]
    * apt-pkg/contrib/fileutl.{cc,h}:
      - add GetModificationTime() helper
    * apt-pkg/pkgcachegen.cc:
@@@ -17,6 -17,6 +18,9 @@@
    * apt-pkg/acquire-item.cc:
      - if no Release.gpg file is found, still load the hashes for
        verification (closes: #636314) and add test
++  
++  [ David Kalnischkies ]
++  * lots of cppcheck fixes
  
   -- Michael Vogt <mvo@debian.org>  Tue, 12 Jul 2011 11:54:47 +0200