message: Fix memory leak in swTableColumn_add() [2].
diff: @@ -128,6 +128,7 @@ int swTableColumn_add(swTable *table, char *name, int len, int type, int size)
  break;
  default:
  swWarn("unkown column type.");
  + swTableColumn_free(col);
  return SW_ERR;
  }
  col->index = table->item_size;
  