2. Adjust the return value of UnicodeStrToAsciiStr() & AsciiStrToUnicodeStr () to be the original destination string to follow MdeLib spec. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4653 6f19259b-4bc3-4df7-8a09-765794883524