===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/m4/look.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -c -r1.18 -r1.19
*** src/usr.bin/m4/look.c	2006/01/20 23:10:19	1.18
--- src/usr.bin/m4/look.c	2009/06/26 22:03:17	1.19
***************
*** 1,4 ****
! /*	$OpenBSD: look.c,v 1.18 2006/01/20 23:10:19 espie Exp $	*/
  
  /*
   * Copyright (c) 1989, 1993
--- 1,4 ----
! /*	$OpenBSD: look.c,v 1.19 2009/06/26 22:03:17 guenther Exp $	*/
  
  /*
   * Copyright (c) 1989, 1993
***************
*** 223,229 ****
  
  	for (n = ohash_first(&macros, &i); n != NULL; 
  	    n = ohash_next(&macros, &i))
! 		f(n->name, n->d);
  }
  
  void 
--- 223,230 ----
  
  	for (n = ohash_first(&macros, &i); n != NULL; 
  	    n = ohash_next(&macros, &i))
! 		if (n->d != NULL)
! 			f(n->name, n->d);
  }
  
  void