Runtime fix for syringe projectiles trying to hit all the mobs on the same turf.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5459 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/reagents/syringe_gun.dm

@@ -85,6 +85,7 @@
 							M.visible_message("<span class='danger'>[M] is hit by the syringe!</span>")
 
 							del(D)
+							break
 					if(D)
 						for(var/atom/A in D.loc)
 							if(A == user) continue