[1.31.0.31] MG Muzzle flash incorrect when moving #3895

[lutorm]

I could only test this offline but since it's first-person that's off it should be generic: When you shoot a mg on a moving vehicle, and the gun is pointed sideways, the muzzle flash is stationary so that you "drive away" from it.

It happens on the 251, the Wacky Laffly the M10 tail gunner, and the guns on the boats. The air gunners don't seem to be afflicted, and neither the tank gunners (but they don't really see their own muzzle flash so it's hard to tell.)

This shows the effect on the 251:

[GOPHUR]

Ready for test 1.31.0.33.

[hertz]

Tested 251 online .33 and seemed fixed.