pidgin/pidgin

Try to fix some gwarnings when pidgin_blist_update_sort_method gets called before the menu of the buddy list exists. This is pretty crappy, but this just helps me get through gdb faster right now.

There are some conditions where pidgin_blist_update_sort_methods will get called before the menu widget exists.

Testing Done:
Compiled and ran in gdb with `G_DEBUG=fatal-warnings`.

Reviewed at https://reviews.imfreedom.org/r/101/
#include <winver.h>
VS_VERSION_INFO VERSIONINFO
FILEVERSION @PURPLE_MAJOR_VERSION@,@PURPLE_MINOR_VERSION@,@PURPLE_MICRO_VERSION@,0
PRODUCTVERSION @PURPLE_MAJOR_VERSION@,@PURPLE_MINOR_VERSION@,@PURPLE_MICRO_VERSION@,0
FILEFLAGSMASK 0
FILEFLAGS 0
FILEOS VOS__WINDOWS32
FILETYPE VFT_APP
FILESUBTYPE VFT2_UNKNOWN
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904B0"
BEGIN
VALUE "CompanyName", "The Pidgin developer community"
VALUE "FileDescription", "Finch instant messenger"
VALUE "FileVersion", "@PURPLE_VERSION@"
VALUE "InternalName", "finch"
VALUE "LegalCopyright", "Copyright (C) 1998-2014 The Pidgin developer community (See the COPYRIGHT file in the source distribution)."
VALUE "OriginalFilename", "finch.exe"
VALUE "ProductName", "Finch"
VALUE "ProductVersion", "@PURPLE_VERSION@"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END