Hans Leidekker : msi: Avoid a crash in get_registered_local_package.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 89e95aa92c5d56fbb267189b2353401e2d848c8c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=89e95aa92c5d56fbb267189b2353401e2d848c8c

Author: Hans Leidekker <hans at codeweavers.com>
Date:   Thu Apr 26 11:18:46 2012 +0200

msi: Avoid a crash in get_registered_local_package.

---

 dlls/msi/package.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/dlls/msi/package.c b/dlls/msi/package.c
index ca836ec..2077396 100644
--- a/dlls/msi/package.c
+++ b/dlls/msi/package.c
@@ -1455,6 +1455,9 @@ static UINT get_registered_local_package( const WCHAR *product, const WCHAR *pac
     if (!strcmpiW( package, unsquashed ))
     {
         WCHAR *filename = msi_reg_get_val_str( props_key, INSTALLPROPERTY_LOCALPACKAGEW );
+        if (!filename)
+            goto done;
+
         strcpyW( localfile, filename );
         msi_free( filename );
         r = ERROR_SUCCESS;