Fixed minor format errors and resource leaks

Some format strings used integer values for unsigned integers.
Memory and file descriptors leaked in some error conditions.

server/modules/routing/binlog/blr_file.c

@@ -1623,6 +1623,7 @@ char err_msg[STRERROR_BUFLEN];
 
 	if(chmod(tmp_file, S_IRUSR | S_IWUSR) < 0) {
 		snprintf(error, BINLOG_ERROR_MSG_LEN, "%s, errno %u", strerror_r(errno, err_msg, sizeof(err_msg)), errno);
+        fclose(config_file);
 		return 2;
 	}
 

server/modules/routing/readwritesplit/readwritesplit.c

@@ -3462,7 +3462,7 @@ static bool select_connect_backend_servers(
                     MXS_WARNING("Couldn't connect to any of the %d "
                                 "slaves. Routing to %s only.",
                                 slaves_found,
-                                (is_synced_master ? "Galera nodes" : "Master"))));
+                                (is_synced_master ? "Galera nodes" : "Master"));
 #endif
                 }
                 else if (slaves_found == 0)