Merge pull request #5941 from Whitellama/master

Fixes #5577, Dionaea crashing on death. Fixes #5838, tomes not being able to be stored on bookshelves."

code/modules/reagents/Chemistry-Reagents.dm

@@ -842,18 +842,18 @@ datum
 			description = "Sterilizes wounds in preparation for surgery."
 			reagent_state = LIQUID
 			color = "#C8A5DC" // rgb: 200, 165, 220
-			
+
 			//makes you squeaky clean
 			reaction_mob(var/mob/living/M, var/method=TOUCH, var/volume)
 				if (method == TOUCH)
 					M.germ_level -= min(volume*20, M.germ_level)
-			
+
 			reaction_obj(var/obj/O, var/volume)
 				O.germ_level -= min(volume*20, O.germ_level)
-			
+
 			reaction_turf(var/turf/T, var/volume)
 				T.germ_level -= min(volume*20, T.germ_level)
-			
+
 	/*		reaction_mob(var/mob/living/M, var/method=TOUCH, var/volume)
 				src = null
 				if (method==TOUCH)
@@ -1332,7 +1332,7 @@ datum
 				if(!M) M = holder.my_atom
 				if(ishuman(M))
 					var/mob/living/carbon/human/H = M
-					
+
 					//Peridaxon is hard enough to get, it's probably fair to make this all internal organs
 					for(var/datum/organ/internal/I in H.internal_organs)
 						if(I.damage > 0)
@@ -3073,6 +3073,9 @@ datum
 					paperaffected.clearpaper()
 					usr << "The solution dissolves the ink on the paper."
 				if(istype(O,/obj/item/weapon/book))
+					if(istype(O,/obj/item/weapon/book/tome))
+						usr << "The solution does nothing. Whatever this is, it isn't normal ink."
+						return
 					if(volume >= 5)
 						var/obj/item/weapon/book/affectedbook = O
 						affectedbook.dat = null