fixed the sleep damage eye blur effect

woo! yippie
(also renamed some of my older comments)

code/modules/mob/living/carbon/carbon_defines.dm

@@ -64,4 +64,3 @@
 
 
 	var/drunkenness = 0 //Overall drunkenness - check handle_alcohol() in life.dm for effects
-	var/burpyness = 0 // GS13 - dumb name, I know. Trying to keep it closely related to "drunkenness"

code/modules/mob/living/carbon/human/human.dm

@@ -812,7 +812,7 @@
 	remove_all_embedded_objects()
 	set_heartattack(FALSE)
 	drunkenness = 0
-	burpyness = 0 //GS13 - lil GS13 addition
+	burpslurring = 0 //GS13
 	for(var/datum/mutation/human/HM in dna.mutations)
 		if(HM.quality != POSITIVE)
 			dna.remove_mutation(HM.name)