[MIRROR] Fixes grilles dropping a stack of 0 iron rods [MDB IGNORE] (#17778)

* Fixes grilles dropping a stack of 0 iron rods (#71501)

## About The Pull Request
Fixes a bug where grilles drop a stack of 0 iron rods on partial
destruction. They now drop one iron rod. Also removes a variable called
rods_broken which is useless.
## Why It's Good For The Game
The stack of 0 rods acts the same as a normal iron rod except its icon
is invisible, meaning it can be snuck past security, this is bad and
could be used for cheese. It also meant grilles dropped less iron rods
than it takes to build a grille, which makes no sense.
Fixes #71203
## Changelog
🆑
fix: fixes grilles dropping stack of 0 iron rods
/🆑

Co-authored-by: tattle <66640614+dragomagol@ users.noreply.github.com>
Co-authored-by: Fikou <23585223+Fikou@ users.noreply.github.com>

* Fixes grilles dropping a stack of 0 iron rods

Co-authored-by: supergrog2 <118997813+supergrog2@users.noreply.github.com>
Co-authored-by: tattle <66640614+dragomagol@ users.noreply.github.com>
Co-authored-by: Fikou <23585223+Fikou@ users.noreply.github.com>

code/game/objects/structures/grille.dm

@@ -17,7 +17,6 @@
 	integrity_failure = 0.4
 	var/rods_type = /obj/item/stack/rods
 	var/rods_amount = 2
-	var/rods_broken = TRUE
 
 /obj/structure/grille/Initialize(mapload)
 	. = ..()
@@ -284,9 +283,8 @@
 		atom_integrity = 20
 		broken = TRUE
 		rods_amount = 1
-		rods_broken = FALSE
-		var/obj/R = new rods_type(drop_location(), rods_broken)
-		transfer_fingerprints_to(R)
+		var/obj/item/dropped_rods = new rods_type(drop_location(), rods_amount)
+		transfer_fingerprints_to(dropped_rods)
 
 /obj/structure/grille/proc/repair_grille()
 	if(broken)
@@ -295,7 +293,6 @@
 		atom_integrity = max_integrity
 		broken = FALSE
 		rods_amount = 2
-		rods_broken = TRUE
 		return TRUE
 	return FALSE
 
@@ -348,7 +345,6 @@
 	density = FALSE
 	broken = TRUE
 	rods_amount = 1
-	rods_broken = FALSE
 
 /obj/structure/grille/broken/Initialize(mapload)
 	. = ..()