Make !update not pull if a game is running

The reason we defer pulling is because if an error happens before
restarting, the line numbers in the traceback may not reflect the
actual line numbers since the code has changed.

src/wolfgame.py

@@ -7297,6 +7297,16 @@ def fpull(cli, nick, chan, rest):
 def update(cli, nick, chan, rest):
     """Pulls from the repository and restarts the bot to update it."""
 
+    force = (rest.strip() == "-force")
+
+    if var.PHASE in var.GAME_PHASES:
+        if var.PHASE == "join" or force:
+            stop_game(cli, log=False)
+        else:
+            reply(cli, nick, chan, messages["stop_bot_ingame_safeguard"].format(
+                what="restart", cmd="update", prefix=botconfig.CMD_CHAR), private=True)
+            return
+
     if update.aftergame:
         # Display "Scheduled restart" instead of "Forced restart" when called with !faftergame
         restart_program.aftergame = True