André Hentschel : msi: Fix crash with access to component.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3299bfd4714821ed168afbb3d122354ae405f02f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=3299bfd4714821ed168afbb3d122354ae405f02f

Author: André Hentschel <nerv at dawncrow.de>
Date:   Sat Jan 30 14:01:58 2010 +0100

msi: Fix crash with access to component.

---

 dlls/msi/files.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/dlls/msi/files.c b/dlls/msi/files.c
index 7e74dca..b7af4d3 100644
--- a/dlls/msi/files.c
+++ b/dlls/msi/files.c
@@ -365,7 +365,8 @@ static UINT ITERATE_DuplicateFiles(MSIRECORD *row, LPVOID param)
                         debugstr_w(component));
 
         /* the action taken was the same as the current install state */        
-        comp->Action = comp->Installed;
+        if (comp)
+            comp->Action = comp->Installed;
 
         return ERROR_SUCCESS;
     }