[MIRROR] Fixes a runtime in advanced camera console [MDB IGNORE] (#843)

* Fixes a runtime in advanced camera console (#79938)
---------

Co-authored-by: SkyratBot <[email protected]>
Co-authored-by: Bloop <[email protected]>
Co-authored-by: SyncIt21 <110812394+SyncIt21@ users.noreply.github.com>

code/game/machinery/computer/camera_advanced.dm

@@ -74,17 +74,18 @@
 	CRASH("[type] does not implement ai eye handling")
 
 /obj/machinery/computer/camera_advanced/remove_eye_control(mob/living/user)
-	if(!user)
+	if(isnull(user?.client))
 		return
+
 	for(var/datum/action/actions_removed as anything in actions)
 		actions_removed.Remove(user)
 	for(var/datum/camerachunk/camerachunks_gone as anything in eyeobj.visibleCameraChunks)
 		camerachunks_gone.remove(eyeobj)
-	if(user.client)
-		user.reset_perspective(null)
-		if(eyeobj.visible_icon && user.client)
-			user.client.images -= eyeobj.user_image
-		user.client.view_size.unsupress()
+
+	user.reset_perspective(null)
+	if(eyeobj.visible_icon)
+		user.client.images -= eyeobj.user_image
+	user.client.view_size.unsupress()
 
 	eyeobj.eye_user = null
 	user.remote_control = null
@@ -121,6 +122,8 @@
 		return
 	if(!can_use(user))
 		return
+	if(isnull(user.client))
+		return
 	if(current_user)
 		to_chat(user, span_warning("The console is already in use!"))
 		return
@@ -165,6 +168,8 @@
 	return //AIs would need to disable their own camera procs to use the console safely. Bugs happen otherwise.
 
 /obj/machinery/computer/camera_advanced/proc/give_eye_control(mob/user)
+	if(isnull(user?.client))
+		return
 	GrantActions(user)
 	current_user = user
 	eyeobj.eye_user = user