Match bullets no longer have a highly above-average chance to ricoche…

…t into their user's foot (#2944)

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## About The Pull Request

Nothing is stopping the only person in ricochet range from being the
person shooting the gun. Which looks really stupid if you are trying to
do something funny and shoot yourself in the foot 6 times.

## Why It's Good For The Game

"bullet that shoots the person who shot it" isn't an ammo type

## Changelog

:cl:
tweak: match rounds will no longer consider the person firing them as a
viable target when ricocheting
/:cl:

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Signed-off-by: Theos <[email protected]>

code/modules/projectiles/projectile.dm

@@ -306,7 +306,7 @@
 	if(firer && HAS_TRAIT(firer, TRAIT_NICE_SHOT))
 		best_angle += NICE_SHOT_RICOCHET_BONUS
 	for(var/mob/living/L in range(ricochet_auto_aim_range, src.loc))
-		if(L.stat == DEAD || !isInSight(src, L))
+		if(L.stat == DEAD || !isInSight(src, L) || L == firer)
 			continue
 		var/our_angle = abs(closer_angle_difference(Angle, Get_Angle(src.loc, L.loc)))
 		if(our_angle < best_angle)