Pinpointers: Remove pinpointers from active list on shutdown of compo… (#5153)

Content.Shared/Pinpointer/SharedPinpointerSystem.cs

@@ -13,6 +13,7 @@ namespace Content.Shared.Pinpointer
         {
             base.Initialize();
             SubscribeLocalEvent<PinpointerComponent, ComponentGetState>(GetCompState);
+            SubscribeLocalEvent<PinpointerComponent, ComponentShutdown>(OnPinpointerShutdown);
         }
 
         private void GetCompState(EntityUid uid, PinpointerComponent pinpointer, ref ComponentGetState args)
@@ -25,6 +26,12 @@ namespace Content.Shared.Pinpointer
             };
         }
 
+        private void OnPinpointerShutdown(EntityUid uid, PinpointerComponent component, ComponentShutdown _)
+        {
+            // no need to dirty it/etc: it's shutting down anyway!
+            ActivePinpointers.Remove(uid);
+        }
+
         /// <summary>
         ///     Manually set distance from pinpointer to target
         /// </summary>