trivial clang fix, help non void function return a bool.

editors/axe/patches/patch-Help_Hyper_c

@@ -1,6 +1,6 @@
-$OpenBSD: patch-Help_Hyper_c,v 1.1 2001/08/22 00:04:41 naddy Exp $
+$OpenBSD: patch-Help_Hyper_c,v 1.2 2017/04/19 22:00:02 espie Exp $
 --- Help/Hyper.c.orig	Wed Apr  6 18:07:36 1994
-+++ Help/Hyper.c	Tue Aug 21 02:43:48 2001
++++ Help/Hyper.c	Wed Apr 19 23:57:24 2017
 @@ -977,7 +977,6 @@ HyperWidget hyper;
  char   *fname;
  {
@@ -9,3 +9,12 @@ $OpenBSD: patch-Help_Hyper_c,v 1.1 2001/08/22 00:04:41 naddy Exp $
  
      FILE *f = fopen(fname,"r");
      if(f)
+@@ -1448,7 +1447,7 @@ Boolean HyperGrep(HyperWidget widget,
+     text_segment *s;
+     char          expbuf[ESIZE];
+ 
+-    if(!widget->hyper.first_seg) return;
++    if(!widget->hyper.first_seg) return FALSE;
+ 
+     if(ignore_case)
+     {