(Fdisplay_buffer): Initialize other, upper, lower.

diff --git a/src/window.c b/src/window.c
index c806739fd0e9c32eeadaf6f369de33cf3fa16789..5c674909224270a2f3db8cd25a08e21e849681fd 100644 (file)
--- a/src/window.c
+++ b/src/window.c
@@ -2072,6 +2072,7 @@ Returns the window displaying BUFFER.")
 #endif
          /* If window appears above or below another,
             even out their heights.  */
+         other = upper = lower = Qnil;
          if (!NILP (XWINDOW (window)->prev))
            other = upper = XWINDOW (window)->prev, lower = window;
          if (!NILP (XWINDOW (window)->next))