MINOR: task/stream: tasks related to a stream must be init by the caller.

The task_wakeup was called on stream_new, but the task/stream
wasn't fully initialized yet. The task_wakeup must be called
explicitly by the caller once the task/stream is initialized.
diff --git a/src/peers.c b/src/peers.c
index 7f63aa9..643b8c5 100644
--- a/src/peers.c
+++ b/src/peers.c
@@ -1835,6 +1835,7 @@
 	totalconn++;
 
 	peer->appctx = appctx;
+	task_wakeup(t, TASK_WOKEN_INIT);
 	return appctx;
 
 	/* Error unrolling */