Fix infinite loop in GC destructor fiber #20884
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zend_object_release(&fiber->std) may restart the fiber due to finally. Any thrown exception must be remembered and unset so that the next fiber may successfully start. Fixes OSS-Fuzz #471533782
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zend_object_release(&fiber->std) may restart the fiber due to finally. Any thrown exception must be remembered and unset so that the next fiber may successfully start.
Fixes OSS-Fuzz #471533782