Use an early return in git_handler (less nesting)

main.go

@@ -68,12 +68,25 @@ func main() {
 
 func git_handler(w http.ResponseWriter, r *http.Request) {
 	var gl_id string
+	var path_match []string
+	var g gitService
+	var found_service bool
 
 	log.Print(r.Method, " ", r.URL)
 
-	for _, g := range git_services {
-		path_match := g.regexp.FindStringSubmatch(r.URL.Path)
+	// Look for a matching Git service
+	for _, g = range git_services {
+		path_match = g.regexp.FindStringSubmatch(r.URL.Path)
 		if r.Method == g.method && path_match != nil {
+			found_service = true
+			break
+		}
+	}
+	if !found_service {
+		http.Error(w, "Not Found", 404)
+		return
+	}
+
 	// Ask the auth backend if the request is allowed, and what the
 	// user ID (GL_ID) is.
 	auth_response, err := do_auth_request(r)
@@ -111,11 +124,6 @@ func git_handler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	g.handle_func(gl_id, g.rpc, path.Join(repo_root, found_path), w, r)
-			return
-		}
-	}
-	http.Error(w, "Not Found", 404)
-	return
 }
 
 func valid_path(p string) bool {