Ensure we only log and notify admins when person is set on fire

This takes advantage of the now refactored IgniteMob returning true when
it successfully ignites the mob

code/modules/hydroponics/grown/flowers.dm

@@ -181,9 +181,9 @@
 	if(istype(M, /mob/living))
 		M << "<span class='danger'>You are lit on fire from the intense heat of the [name]!</span>"
 		M.adjust_fire_stacks(seed.potency / 20)
-		message_admins("[key_name_admin(user)] set (key_name_admin(M)) on fire")
-		log_game("[key_name(user)] set [key_name(M)] on fire")
-		M.IgniteMob()
+		if(M.IgniteMob())
+			message_admins("[key_name_admin(user)] set (key_name_admin(M)) on fire")
+			log_game("[key_name(user)] set [key_name(M)] on fire")
 
 /obj/item/weapon/grown/novaflower/afterattack(atom/A as mob|obj, mob/user,proximity)
 	if(!proximity) return

code/modules/mob/living/living_defense.dm

@@ -163,8 +163,8 @@
 	if(on_fire) //Only spread fire stacks if we're on fire
 		fire_stacks /= 2
 		L.fire_stacks += fire_stacks
-		L.IgniteMob()
-		log_game("[key_name(src)] bumped into [key_name(L)] and set them on fire")
+		if(L.IgniteMob())
+			log_game("[key_name(src)] bumped into [key_name(L)] and set them on fire")
 
 	if(L_old_on_fire) //Only ignite us and gain their stacks if they were onfire before we bumped them
 		L.fire_stacks /= 2