message: MSMF: fixed issue with camera format selection
diff: @@ -498,7 +498,7 @@ public:
  best = *i;
  break;
  }
  - if (i->second.isBetterThan(best.second, newType))
  + if (best.second.isEmpty() || i->second.isBetterThan(best.second, newType))
  {
  best = *i;
  }
  