Fixe Flag Burning (#9792)

* Fixes Flag Burning

* changelog

code/game/objects/structures/signs.dm

@@ -705,10 +705,10 @@
 		desc = "You can't make out anything from the flag's original print. It's ruined."
 		add_fingerprint(user)
 
-/obj/structure/sign/flag/attackby(obj/item/W as obj, mob/user as mob)
+/obj/structure/sign/flag/attackby(obj/item/W, mob/user)
 	..()
 
-	if(istype(W, /obj/item/flame/lighter))
+	if(W.isFlameSource())
 
 		visible_message(SPAN_WARNING("\The [user] starts to burn \the [src] down!"))
 

html/changelogs/WilliamMurdoch-flagburnfix.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes: 
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.  
+author: WilliamMurdoch
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - bugfix: "Allows any object with a flame to burn flags."