http.go: incorrect error message displayed when no metrics encoded error

The "No metrics encoded" error was erroneously displayed the value of err, not lastErr.
2017-08-31 12:02:56 +10:00 · 2017-08-31 12:02:56 +10:00 · a166207919
parent 61d8c3f402
commit a166207919
1 changed files with 1 additions and 1 deletions
--- a/prometheus/http.go
+++ b/prometheus/http.go
@ -96,7 +96,7 @@ func UninstrumentedHandler() http.Handler {
 			closer.Close()
 		}
 		if lastErr != nil && buf.Len() == 0 {
-			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			http.Error(w, "No metrics encoded, last error:\n\n"+lastErr.Error(), http.StatusInternalServerError)
 			return
 		}
 		header := w.Header()