* xterm.c (syms_of_xterm): staticpro Qmodifier_value.

src/ChangeLog

 2013-11-12  Paul Eggert  <eggert@cs.ucla.edu>
 
+	* xterm.c (syms_of_xterm): staticpro Qmodifier_value.
+
 	* buffer.c (Fforce_mode_line_update): Don't fall off end of function
 	that requires a return value.
 	(Fset_buffer_modified_p): Take advantage of this change to do

src/xterm.c

@@ -10587,7 +10587,7 @@ With MS Windows or Nextstep, the value is t.  */);
   Vx_toolkit_scroll_bars = Qnil;
 #endif
 
-  Qmodifier_value = intern_c_string ("modifier-value");
+  DEFSYM (Qmodifier_value, "modifier-value");
   Qalt = intern_c_string ("alt");
   Fput (Qalt, Qmodifier_value, make_number (alt_modifier));
   Qhyper = intern_c_string ("hyper");