Pass the breaker error upwards to the caller

Part of #86

src/github.com/turt2live/matrix-media-repo/api/auth.go

@@ -19,7 +19,6 @@ func AccessTokenRequiredRoute(next func(r *http.Request, log *logrus.Entry, user
 		appserviceUserId := util.GetAppserviceUserIdFromRequest(r)
 		userId, err := matrix.GetUserIdFromToken(r.Context(), r.Host, accessToken, appserviceUserId)
 		if err != nil || userId == "" {
-			log.Error(err)
 			if err != nil && err != matrix.ErrNoToken {
 				log.Error("Error verifying token: ", err)
 				return InternalServerError("Unexpected Error")

src/github.com/turt2live/matrix-media-repo/matrix/admin.go

@@ -13,7 +13,7 @@ func IsUserAdmin(ctx context.Context, serverName string, accessToken string) (bo
 
 	isAdmin := false
 	var replyError error
-	cb.CallContext(ctx, func() error {
+	replyError = cb.CallContext(ctx, func() error {
 		mtxClient, err := gomatrix.NewClient(hs.ClientServerApi, "", accessToken)
 		if err != nil {
 			err, replyError = filterError(err)
@@ -40,7 +40,7 @@ func ListMedia(ctx context.Context, serverName string, accessToken string, roomI
 
 	response := &mediaListResponse{}
 	var replyError error
-	cb.CallContext(ctx, func() error {
+	replyError = cb.CallContext(ctx, func() error {
 		mtxClient, err := gomatrix.NewClient(hs.ClientServerApi, "", accessToken)
 		if err != nil {
 			err, replyError = filterError(err)

src/github.com/turt2live/matrix-media-repo/matrix/auth.go

@@ -19,7 +19,7 @@ func GetUserIdFromToken(ctx context.Context, serverName string, accessToken stri
 
 	userId := ""
 	var replyError error
-	cb.CallContext(ctx, func() error {
+	replyError = cb.CallContext(ctx, func() error {
 		mtxClient, err := gomatrix.NewClient(hs.ClientServerApi, "", accessToken)
 		if err != nil {
 			err, replyError = filterError(err)