Backport of "x265: Fix a deadlock when failing to create the x265enc." into 1.18
Backport of !2451 (merged) "x265: Fix a deadlock when failing to create the x265enc.".
Commits:
- c5fda684 x265: Fix a deadlock when failing to create the x265enc.
Backport of !2451 (merged) "x265: Fix a deadlock when failing to create the x265enc.".
Commits: