Fixes #333.
I cannot reproduce this crash, but looks like the crash happens during
exit, I am thinking perhaps the buddylist window gets closed before the
plugin tries to remove the statusboxes.
-include $(PP_TOP)/local.mak
PIDGIN_TREE_TOP?=$(PP_TOP)/../../..
GTK_TOP:=$(PIDGIN_TREE_TOP)/../win32-dev/gtk_2_0
DLL_ZIP_DIR:=$(PP_TOP)/win32-dist
PP_VERSION:=$(shellcat${PP_TOP}/VERSION)
PP_CONFIG_H:=$(PP_TOP)/pp_config.h
include $(PIDGIN_TREE_TOP)/libpurple/win32/global.mak