Minor fixes

cmd/sing-box/debug.go

@@ -0,0 +1,12 @@
+//go:build debug
+
+package main
+
+import (
+	"net/http"
+	_ "net/http/pprof"
+)
+
+func init() {
+	go http.ListenAndServe("0.0.0.0:8964", nil)
+}