feat(stdiscosrv): enable HTTP profiler

cmd/stdiscosrv/main.go

@@ -19,6 +19,8 @@ import (
 	"strings"
 	"time"
 
+	_ "net/http/pprof"
+
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	_ "github.com/syncthing/syncthing/lib/automaxprocs"
 	"github.com/syncthing/syncthing/lib/build"