[flow] FilePos' members are unsigned now instead of size_t
[flow] FilePos' members are unsigned now instead of size_t

christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0