tree 1609ad00fc78d9f315ce8ce8af726010e997b8ab
parent 287fc87424734d4de0465deaddf65174c4347301
author Johannes Doerfert <johannes@jdoerfert.de> 1634412036 -0500
committer Copybara-Service <copybara-worker@google.com> 1635376835 -0700

[OpenMP][FIX] Do not dereference a potential nullptr

The first thread state in the new GPU runtime doesn't have a previous
one and we should not dereference the nullptr placeholder.

Reviewed By: tianshilei1992

Differential Revision: https://reviews.llvm.org/D111946

GitOrigin-RevId: dc72960967d7a440d0dfd30bbc70e4131ca5e239