if(nbytes <= 4) {
const char *data = rawItem.constData();
if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
if(nbytes <= 4) {
const char *data = rawItem.constData();
if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {