* window.c (size_window): Avoid needless test at loop start.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/window.c b/src/window.c
index 4dbee41c5f4..bc9f31e03e8 100644
--- a/src/window.c
+++ b/src/window.c
@@ -3094,11 +3094,14 @@ size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int firs
       Lisp_Object last_child;
       int child_size;
 
-      for (child = *forward; !NILP (child); child = c->next)
+      child = *forward;
+      do
         {
           c = XWINDOW (child);
           last_child = child;
+          child = c->next;
         }
+      while (!NILP (child));
 
       child_size = WINDOW_TOTAL_SIZE (c, width_p);
       size_window (last_child, size - old_size + child_size,