PVS-Studio warning V502 for FCEUX

static BOOL CALLBACK MemWatchCallB(....)
{
  ...
  EnableMenuItem(memwmenu, MEMW_FILE_SAVE,
    MF_BYCOMMAND | fileChanged ? MF_ENABLED:MF_GRAYED);
  ...
}

It works because of sheer luck, since #define MF_BYCOMMAND 0x00000000L.

This suspicious code was found in FCEUX project by PVS-Studio static code analyzer.
Warning message is:
V502 Perhaps the '?:' operator works in a different way than it was expected. The '?:' operator has a lower priority than the '|' operator. fceux memwatch.cpp 711

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