Fixed string length constant bug.

lib/master.c

@@ -156,7 +156,7 @@ int ecrt_master_get_slave(ec_master_t *master, uint16_t slave_position,
     slave_info->error_flag = data.error_flag;
     slave_info->sync_count = data.sync_count;
     slave_info->sdo_count = data.sdo_count;
-    strncpy(slave_info->name, data.name, EC_IOCTL_STRING_SIZE);
+    strncpy(slave_info->name, data.name, EC_MAX_STRING_LENGTH);
     return 0;
 }