Fix leak with cycle in static prop of internal class

More the cleanup of interned classes before the final GC run,
just like it is done for user classes.

Author: nikic

Zend/tests/bug78335_2.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Bug #78335: Static properties containing cycles report as leak (internal class variant)
+--FILE--
+<?php
+
+$foo = [&$foo];
+_ZendTestClass::$_StaticProp = $foo;
+
+?>
+===DONE===
+--EXPECT--
+===DONE===

Zend/zend_execute_API.c

@@ -294,9 +294,6 @@ void shutdown_executor(void) /* {{{ */
 		} ZEND_HASH_FOREACH_END();
 		ZEND_HASH_REVERSE_FOREACH_VAL(EG(class_table), zv) {
 			zend_class_entry *ce = Z_PTR_P(zv);
-			if (ce->type == ZEND_INTERNAL_CLASS) {
-				break;
-			}
 			if (ce->default_static_members_count) {
 				zend_cleanup_internal_class_data(ce);
 			}
@@ -397,8 +394,6 @@ void shutdown_executor(void) /* {{{ */
 			} ZEND_HASH_FOREACH_END_DEL();
 		}
 
-		zend_cleanup_internal_classes();
-
 		while (EG(symtable_cache_ptr) > EG(symtable_cache)) {
 			EG(symtable_cache_ptr)--;
 			zend_hash_destroy(*EG(symtable_cache_ptr));