by Valgrind. This concerns the XML libxml2 support.

modified:
  storage/connect/domdoc.cpp
  storage/connect/domdoc.h
  storage/connect/ha_connect.cc
  storage/connect/libdoc.cpp
  storage/connect/plgdbsem.h
  storage/connect/plgxml.h
  storage/connect/tabxml.cpp
  storage/connect/tabxml.h