bpo-34770: Fix a possible null pointer dereference in pyshellext.cpp (GH-9497)


The GlobalLock() call in UpdateDropDescription() was not checked for
failure.

https://bugs.python.org/issue34770
(cherry picked from commit f6c8007a29b95b3ea3ca687a9b4924769a696328)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
2 files changed