Chemgrenade fix

- If check to handle grenades detonating in a mobs hand correctly.

code/game/objects/items/weapons/grenades/chem_grenade.dm

@@ -161,6 +161,10 @@
 				if( A == src ) continue
 				src.reagents.reaction(A, 1, 10)
 
+		if(istype(loc, /mob/living/carbon))		//drop dat grenade if it goes off in your hand
+			var/mob/living/carbon/C = loc
+			C.drop_from_inventory(src)
+			C.throw_mode_off()
 
 		invisibility = INVISIBILITY_MAXIMUM //Why am i doing this?
 		spawn(50)		   //To make sure all reagents can work