Milo: Fix ?limit= param

milo/frontend/middleware.go

Index: milo/frontend/middleware.go
diff --git a/milo/frontend/middleware.go b/milo/frontend/middleware.go
index 7c750c2d03bcdbd056f48ca5816f69b6b68625d2..f5e5cccbe2d6af658d34807fa1763555eafd85bc 100644
--- a/milo/frontend/middleware.go
+++ b/milo/frontend/middleware.go
@@ -252,13 +252,7 @@ func GetLimit(r *http.Request) (int, error) {
 // both are unspecified, then limit is omitted.
 func pagedURL(r *http.Request, limit int, cursor string) string {
 	if limit == 0 {
-		var err error
-		limit, err = GetLimit(r)
-		if err != nil {
-			// This should not happen because the handler should've already validated the
-			// limit earlier in the process.
-			panic(err)
-		}
+		limit, _ = GetLimit(r) // This returns -1 on error.
 		if limit < 0 {
 			limit = 0
 		}