(build_desired_tool_bar_string): Make sure we have

a desired tool bar string, even if there are not tool bar
items.

diff --git a/src/xdisp.c b/src/xdisp.c
index 785159688239e4f18a77f46fbe400b00fe67c1ed..beafebffe160c2b14adaea1ea70967e786ca63ff 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -7161,7 +7161,7 @@ build_desired_tool_bar_string (f)
   size_needed = f->n_tool_bar_items;
   
   /* Reuse f->desired_tool_bar_string, if possible.  */
-  if (size < size_needed)
+  if (size < size_needed || NILP (f->desired_tool_bar_string))
     f->desired_tool_bar_string = Fmake_string (make_number (size_needed),
                                               make_number (' '));
   else