Stop after exceptions

ext/ffi/ffi.c

@@ -3826,6 +3826,7 @@ ZEND_METHOD(FFI, cast) /* {{{ */
 			RETURN_OBJ(&cdata->std);
 		} else {
 			zend_wrong_parameter_class_error(2, "FFI\\CData", zv);
+			return;
 		}
 	}
 
@@ -4069,6 +4070,7 @@ ZEND_METHOD(FFI, addr) /* {{{ */
 	ZVAL_DEREF(zv);
 	if (Z_TYPE_P(zv) != IS_OBJECT || Z_OBJCE_P(zv) != zend_ffi_cdata_ce) {
 		zend_wrong_parameter_class_error(1, "FFI\\CData", zv);
+		return;
 	}
 
 	cdata = (zend_ffi_cdata*)Z_OBJ_P(zv);