Fix memory leak in cling/lib/Utils/PlatformWin.cpp
Fix memory leak in cling/lib/Utils/PlatformWin.cpp

Seems to be, buffer is not released correctly.
I guess, error should be fixed in cling repository first

root-mirror/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling