Fixed bogus query failure claim, on some queries such as OPTIMIZE table.

diff --git a/ext/pdo_mysql/mysql_driver.c b/ext/pdo_mysql/mysql_driver.c
index 293a822affbc79e6037bbb6143b73a1f4410c0bd..3300fa335897625ab230f5a9ed1a3e26c287051b 100755 (executable)
--- a/ext/pdo_mysql/mysql_driver.c
+++ b/ext/pdo_mysql/mysql_driver.c
@@ -151,7 +151,8 @@ static long mysql_handle_doer(pdo_dbh_t *dbh, const char *sql, long sql_len TSRM
                pdo_mysql_error(dbh);
                return -1;
        } else {
-               return mysql_affected_rows(H->server);
+               long c = mysql_affected_rows(H->server);
+               return c >0 ? c : 0;
        }
 }