Fix use after free

Author: Girgias

ext/standard/assert.c

@@ -167,7 +167,6 @@ PHP_FUNCTION(assert)
 			call_user_function(NULL, NULL, &ASSERTG(callback), &retval, 3, args);
 		}
 
-		zval_ptr_dtor(&args[0]);
 		zval_ptr_dtor(&retval);
 	}
 

ext/standard/tests/assert/assert_closures_multiple.phpt

@@ -0,0 +1,35 @@
+--TEST--
+assert() asserting multiple with callback
+--INI--
+assert.active = 1
+assert.warning = 1
+assert.bail = 0
+assert.exception=1
+--FILE--
+<?php
+assert_options(ASSERT_CALLBACK, function ($f) {});
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+try {
+    assert(false);
+} catch (Throwable) {}
+?>
+DONE
+--EXPECT--
+DONE