(syms_of_xterm): Initialize last_mouse_scroll_bar.

diff --git a/src/xterm.c b/src/xterm.c
index f995a2db6322a2ab446aa474c67ce6b904f21608..ca4c5bacc310a095b824d760e47c0f459bdcfbee 100644 (file)
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -4949,6 +4949,7 @@ void
 syms_of_xterm ()
 {
   staticpro (&last_mouse_scroll_bar);
+  last_mouse_scroll_bar = Qnil;
 }
 #endif /* ! defined (HAVE_X11) */
 #endif /* ! defined (HAVE_X_WINDOWS) */