Nikolay Sivov : msi: Fix potential NULL pointer dereference in ILockBytes_Release (Coverity).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2fbe8d23eb2070472d75037ac8024bd9e2509bfb
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=2fbe8d23eb2070472d75037ac8024bd9e2509bfb

Author: Nikolay Sivov <bunglehead at gmail.com>
Date:   Sat Jan 24 18:47:33 2009 +0300

msi: Fix potential NULL pointer dereference in ILockBytes_Release (Coverity).

---

 dlls/msi/storages.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/msi/storages.c b/dlls/msi/storages.c
index 2e21cb8..302906b 100644
--- a/dlls/msi/storages.c
+++ b/dlls/msi/storages.c
@@ -134,7 +134,7 @@ static UINT STORAGES_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec
 
 static HRESULT stream_to_storage(IStream *stm, IStorage **stg)
 {
-    ILockBytes *lockbytes;
+    ILockBytes *lockbytes = NULL;
     STATSTG stat;
     LPVOID data;
     HRESULT hr;
@@ -177,7 +177,7 @@ static HRESULT stream_to_storage(IStream *stm, IStorage **stg)
 
 done:
     msi_free(data);
-    ILockBytes_Release(lockbytes);
+    if (lockbytes) ILockBytes_Release(lockbytes);
     return hr;
 }