Do not mark automatic return 1; as executable

sapi/phpdbg/phpdbg.c

@@ -432,7 +432,9 @@ static void phpdbg_oplog_fill_executable(zend_op_array *op_array, HashTable *ins
 	ZVAL_LONG(&zero, 0);
 
 	/* ignore autogenerated return (well, not too precise with finally branches, but that's okay) */
-	if (op_array->last > 1 && (end - 1)->opcode == ZEND_RETURN && ((end - 2)->opcode == ZEND_RETURN || (end - 2)->opcode == ZEND_GENERATOR_RETURN || (end - 2)->opcode == ZEND_THROW)) {
+	if (op_array->last >= 1 && (end - 1)->opcode == ZEND_RETURN
+	 && ((op_array->last > 1 && ((end - 2)->opcode == ZEND_RETURN || (end - 2)->opcode == ZEND_GENERATOR_RETURN || (end - 2)->opcode == ZEND_THROW))
+	  || op_array->function_name == NULL)) {
 		end--;
 	}