comparison framework/MainWindowBase.cpp @ 150:6e8bce502be3

* Avoid crash when zooming-to-fit a very short file!  (Of course, we
  can't actually make a very short file zoom to fit as we don't permit
  close enough zoom resolution, but best not to crash, hey?)

     if (pixels > sw * 2) pixels -= sw * 2;
     else pixels = 1;
     if (pixels > 4) pixels -= 4;
 
     size_t zoomLevel = (end - start) / pixels;
+    if (zoomLevel < 1) zoomLevel = 1;
 
     currentPane->setZoomLevel(zoomLevel);
     currentPane->setCentreFrame((start + end) / 2);
 }