xdisp.c (hscroll_window_tree): Sync comment with the code.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 8adc83b5068..1ccaa0641b0 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -11916,9 +11916,9 @@ hscroll_window_tree (Lisp_Object window)
                 }
               hscroll = max (hscroll, XFASTINT (w->min_hscroll));
 
-              /* Don't call Fset_window_hscroll if value hasn't
-                 changed because it will prevent redisplay
-                 optimizations.  */
+              /* Don't will prevent redisplay optimizations if hscroll
+                 hasn't changed, as it will unnecessarily slow down
+                 redisplay.  */
               if (XFASTINT (w->hscroll) != hscroll)
                 {
                   XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;