PVS-Studio warning V612 for KDE4

BufferFragment split(char c, unsigned int* start)
{
  while (*start < len) {
    int end = indexOf(c, *start);
    if (end == -1) end = len;
    BufferFragment line(d + (*start), end - (*start));
    *start = end + 1;
    return line;
  }
  return BufferFragment();
}

This suspicious code was found in KDE4 project by PVS-Studio static code analyzer.
Warning message is:
V612 An unconditional 'return' within a loop. bufferfragment_p.h 94

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/