cmd/pkgserver: constant string in pattern

This resolves patterns at compile time.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/pkgserver/main.go

@@ -70,7 +70,7 @@ func main() {
 
 		var mux http.ServeMux
 		uiRoutes(&mux)
-		apiRoutes(&mux, &index)
+		index.registerAPI(&mux)
 		server := http.Server{
 			Addr:    flagAddr,
 			Handler: &mux,