void msPostGISLayerFreeItemInfo(layerObj *layer)
{
#ifdef USE_POSTGIS
  if (layer->debug) {
    msDebug("msPostGISLayerFreeItemInfo called.\n");
  }

  if (layer->iteminfo) {
    free(layer->iteminfo);
  }
  layer->iteminfo = NULL;
#endif
}

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.