apply various style suggestions by cppcheck

Some of them modify the ABI, but given that we prepare a big one
already, these few hardly count for much.

Git-Dch: Ignore

1 files changed, 1 insertions, 1 deletions

diff --git a/apt-pkg/pkgcachegen.h b/apt-pkg/pkgcachegen.h
index 3c1a40972..c7b6de1b6 100644
--- a/apt-pkg/pkgcachegen.h
+++ b/apt-pkg/pkgcachegen.h
@@ -54,7 +54,7 @@ class APT_HIDDEN pkgCacheGenerator					/*{{{*/
    template<typename Iter> class Dynamic {
       public:
       static std::vector<Iter*> toReMap;
-      Dynamic(Iter &I) {
+      explicit Dynamic(Iter &I) {
 	 toReMap.push_back(&I);
       }