store strlen(db) in a variable

Author: SakiTakamachi

ext/odbc/php_odbc.c

@@ -2096,8 +2096,9 @@ int odbc_sqlconnect(odbc_connection **conn, char *db, char *uid, char *pwd, int
 		if (strstr((char*)db, "=")) {
 			direct = 1;
 
-			bool use_uid_arg = !php_memnistr(db, "uid=", strlen("uid="), db + strlen(db));
-			bool use_pwd_arg = !php_memnistr(db, "pwd=", strlen("pwd="), db + strlen(db));
+			size_t db_len = strlen(db);
+			bool use_uid_arg = !php_memnistr(db, "uid=", strlen("uid="), db + db_len);
+			bool use_pwd_arg = !php_memnistr(db, "pwd=", strlen("pwd="), db + db_len);
 
 			/* Force UID and PWD to be set in the DSN */
 			if (use_uid_arg || use_pwd_arg) {