Fix more deprecation warnings

discord/gateway.py

@@ -389,7 +389,7 @@ class DiscordWebSocket(websockets.client.WebSocketClientProtocol):
 
             if op == self.INVALIDATE_SESSION:
                 if data is True:
-                    await asyncio.sleep(5.0, loop=self.loop)
+                    await asyncio.sleep(5.0)
                     await self.close()
                     raise ResumeWebSocket(self.shard_id)
 

discord/shard.py

@@ -289,7 +289,7 @@ class AutoShardedClient(Client):
             except Exception:
                 pass
 
-        to_close = [shard.ws.close() for shard in self.shards.values()]
+        to_close = [asyncio.ensure_future(shard.ws.close(), loop=self.loop) for shard in self.shards.values()]
         if to_close:
             await asyncio.wait(to_close)
 

discord/utils.py

@@ -328,7 +328,10 @@ async def async_all(gen, *, check=_isawaitable):
     return True
 
 async def sane_wait_for(futures, *, timeout):
-    done, pending = await asyncio.wait(futures, timeout=timeout, return_when=asyncio.ALL_COMPLETED)
+    ensured = [
+        asyncio.ensure_future(fut) for fut in futures
+    ]
+    done, pending = await asyncio.wait(ensured, timeout=timeout, return_when=asyncio.ALL_COMPLETED)
 
     if len(pending) != 0:
         raise asyncio.TimeoutError()