p9ufs: clarify that :port is required

abitrolly · hugelgupf · commit c2eabf42e183 · 2025-04-03T09:20:31.000-07:00
```
$ p9ufs 127.0.0.1
2025/04/02 10:20:51 err binding: listen tcp: address 127.0.0.1: missing port in address
```
diff --git a/cmd/p9ufs/p9ufs.go b/cmd/p9ufs/p9ufs.go
@@ -51,7 +51,7 @@ func main() {
 	}
 
 	if len(flag.Args()) != 1 {
-		log.Fatalf("usage: %s <bind-addr>", os.Args[0])
+		log.Fatalf("usage: %s <bind-addr:port>", os.Args[0])
 	}
 
 	// Bind and listen on the socket.

Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ func main() {`
`51`	`51`	`}`
`52`	`52`
`53`	`53`	`if len(flag.Args()) != 1 {`
`54`		`- log.Fatalf("usage: %s <bind-addr>", os.Args[0])`
	`54`	`+ log.Fatalf("usage: %s <bind-addr:port>", os.Args[0])`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`// Bind and listen on the socket.`