shell32: Fix setting the selection

[André Hentschel]

Fixes a crash with various VB6 applications using brsfolder
---
 dlls/shell32/brsfolder.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/dlls/shell32/brsfolder.c b/dlls/shell32/brsfolder.c
index 9b0d20b..7fd6b46 100644
--- a/dlls/shell32/brsfolder.c
+++ b/dlls/shell32/brsfolder.c
@@ -782,6 +782,7 @@ static BOOL BrsFolder_OnSetSelectionW(browse_info *info, LPVOID selection, BOOL
     HTREEITEM hItem;
     BOOL bResult;
 
+    if (!selection) return FALSE;
     bResult = BrsFolder_OnSetExpanded(info, selection, is_str, &hItem);
     if (bResult)
         SendMessageW(info->hwndTreeView, TVM_SELECTITEM, TVGN_CARET, (LPARAM)hItem );
-- 

Best Regards, André Hentschel