Use safe version and comment

Author: Girgias

Zend/zend_operators.c

@@ -464,12 +464,12 @@ ZEND_API void ZEND_FASTCALL convert_to_long(zval *op) /* {{{ */
 		case IS_LONG:
 			break;
 		case IS_DOUBLE:
-			// TODO Use safe variant?
-			ZVAL_LONG(op, zend_dval_to_lval(Z_DVAL_P(op)));
+			ZVAL_LONG(op, zend_dval_to_lval_safe(Z_DVAL_P(op)));
 			break;
 		case IS_STRING:
 			{
 				zend_string *str = Z_STR_P(op);
+				/* zval_get_long will check if float string is integer compatible */
 				ZVAL_LONG(op, zval_get_long(op));
 				zend_string_release_ex(str, 0);
 			}