OSV-2021-736 Stack-use-after-return in zend_fiber_suspend_context

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34013 Crash type: Stack-use-after-return READ 4 Crash state: zendfibersuspendcontext zendfibersuspend zimFibersuspend...