fix a small nit (#11834)

As title, run this line in one time is enough.

Signed-off-by: a1012112796 <1012112796@qq.com>

routers/repo/http.go

@@ -332,8 +332,9 @@ func HTTP(ctx *context.Context) {
 		Env:         environ,
 	}
 
+	r.URL.Path = strings.ToLower(r.URL.Path) // blue: In case some repo name has upper case name
+
 	for _, route := range routes {
-		r.URL.Path = strings.ToLower(r.URL.Path) // blue: In case some repo name has upper case name
 		if m := route.reg.FindStringSubmatch(r.URL.Path); m != nil {
 			if setting.Repository.DisableHTTPGit {
 				w.WriteHeader(http.StatusForbidden)