Vladimir Pankratov : hhctrl.ocx: Handle NULL param.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 01128fa35b0c16e91837ff213f2d4f7cd18d4377
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=01128fa35b0c16e91837ff213f2d4f7cd18d4377

Author: Vladimir Pankratov <scriptkid at mail.ru>
Date:   Tue Aug 11 17:07:00 2009 +0500

hhctrl.ocx: Handle NULL param.

---

 dlls/hhctrl.ocx/help.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/hhctrl.ocx/help.c b/dlls/hhctrl.ocx/help.c
index a19e1e6..092e97e 100644
--- a/dlls/hhctrl.ocx/help.c
+++ b/dlls/hhctrl.ocx/help.c
@@ -129,7 +129,7 @@ BOOL NavigateToChm(HHInfo *info, LPCWSTR file, LPCWSTR index)
         return FALSE;
     }
 
-    wsprintfW(buf, url_format, full_path, index[0] == '/' ? empty : slash, index);
+    wsprintfW(buf, url_format, full_path, (!index || index[0] == '/') ? empty : slash, index);
 
     /* FIXME: HACK */
     if((ptr = strchrW(buf, '#')))