Fix /ollama pull

jimmy/cogs/chat.py

@@ -434,6 +434,7 @@ class Chat(commands.Cog):
                 last_completed = 0
                 last_completed_ts = time.time()
 
+                async with ollama_client(str(server.base_url)) as client:
                     async for line in await client.pull(model, stream=True):
                         if view.event.is_set():
                             embed.add_field(name="Error!", value="Download cancelled.")