Set called_scope in Closure::call (fixes bug #70987)

Author: hikari-no-yume

Zend/tests/bug70987.phpt

@@ -0,0 +1,15 @@
+--TEST--
+Bug #70987 (static::class within Closure::call() causes segfault)
+--FILE--
+<?php
+
+class foo {}
+$bar = function () {
+   return static::class;
+};
+
+var_dump($bar->call(new foo));
+
+?>
+--EXPECTF--
+string(3) "foo"

Zend/zend_closures.c

@@ -150,6 +150,7 @@ ZEND_METHOD(Closure, call)
 	fci.param_count = my_param_count;
 	fci.object = fci_cache.object = newobj;
 	fci_cache.initialized = 1;
+	fci_cache.called_scope = Z_OBJCE_P(newthis);
 
 	if (fci_cache.function_handler->common.fn_flags & ZEND_ACC_GENERATOR) {
 		zval new_closure;