(reset_terminal_modes): Only invoke hook if defined.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/term.c b/src/term.c
index 39aba03da9f..db1f317114e 100644
--- a/src/term.c
+++ b/src/term.c
@@ -371,7 +371,8 @@ reset_terminal_modes ()
 {
   if (! FRAME_TERMCAP_P (selected_frame))
     {
-      (*reset_terminal_modes_hook) ();
+      if (reset_terminal_modes_hook)
+        (*reset_terminal_modes_hook) ();
       return;
     }
   if (TN_standout_width < 0)