Fix memory leaks
Fix memory leaks

Found these with valgrind

philipl/gvfs,philipl/gvfs,xkahn/gvfs-cmis,xkahn/gvfs-cmis,gicmo/gvfs,halfline/gvfs,xkahn/gvfs-cmis,xkahn/gvfs-cmis,gicmo/gvfs,halfline/gvfs,gicmo/gvfs,cpatulea/gvfs,philipl/gvfs,halfline/gvfs,gicmo/gvfs,cpatulea/gvfs