http2/h2i: update line endings for recent change to console package

The console package empirically seems to require \r\n line endings now,
else the print head does not go back to the left of the screen.

Change-Id: I49f1870b8c48da254afaeaf3daf2e8fdd0432d52
Reviewed-on: https://go-review.googlesource.com/32321
Reviewed-by: Blake Mizerany <blake.mizerany@gmail.com>

http2/h2i/h2i.go

@@ -238,7 +238,7 @@ func (app *h2i) Main() error {
 }
 
 func (app *h2i) logf(format string, args ...interface{}) {
-	fmt.Fprintf(app.term, format+"\n", args...)
+	fmt.Fprintf(app.term, format+"\r\n", args...)
 }
 
 func (app *h2i) readConsole() error {
@@ -435,9 +435,9 @@ func (app *h2i) readFrames() error {
 				return nil
 			})
 		case *http2.WindowUpdateFrame:
-			app.logf("  Window-Increment = %v\n", f.Increment)
+			app.logf("  Window-Increment = %v", f.Increment)
 		case *http2.GoAwayFrame:
-			app.logf("  Last-Stream-ID = %d; Error-Code = %v (%d)\n", f.LastStreamID, f.ErrCode, f.ErrCode)
+			app.logf("  Last-Stream-ID = %d; Error-Code = %v (%d)", f.LastStreamID, f.ErrCode, f.ErrCode)
 		case *http2.DataFrame:
 			app.logf("  %q", f.Data())
 		case *http2.HeadersFrame: