PVS-Studio warning V564 for FCEUX

static BOOL CALLBACK MemWatchCallB(
  HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
  ...
  EnableMenuItem(memwmenu,MEMW_FILE_SAVE,
    MF_BYCOMMAND | fileChanged ? MF_ENABLED:MF_GRAYED);
  ...
}

This is what it turns out to be: (MF_BYCOMMAND | fileChanged) ? MF_ENABLED:MF_GRAYED, while it should actually be: MF_BYCOMMAND | (fileChanged ? MF_ENABLED:MF_GRAYED). The code works due to sheer luck, as #define MF_BYCOMMAND 0x00000000L.

This suspicious code was found in FCEUX project by PVS-Studio static code analyzer.
Warning message is:
V564 The '|' operator is applied to bool type value. You've probably forgotten to include parentheses or intended to use the '||' operator. fceux memwatch.cpp 711

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