Fix Closure leak in aborted INIT_DYNAMIC_FCALL

Author: bwoebi

Zend/tests/closure_call_leak_with_exception.phpt

@@ -0,0 +1,14 @@
+--FILE--
+Closure must not leak during a dynmaic call interrupted by an exception
+--TEST--
+<?php
+
+(function() {
+	$closure = function($foo) { var_dump($foo); };
+	$closure(yield);
+})()->valid(); // start
+
+?>
+==DONE==
+--EXPECT--
+==DONE==

Zend/zend_execute.c

@@ -2486,6 +2486,9 @@ static zend_always_inline void i_cleanup_unfinished_execution(zend_execute_data
 				}
 				OBJ_RELEASE(Z_OBJ(call->This));
 			}
+			if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
+				zend_object_release(call->func->common.prototype);
+			}
 			if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
 				zend_string_release(call->func->common.function_name);
 				zend_free_trampoline(call->func);