msi: Fall back to checking if the cab exists if the volume name doesn't match

[James Hawkins]

Hi,

Fixes the AutoCAD 2004 installer, probably several others.

Changelog:
* Fall back to checking if the cab exists if the volume name doesn't match.

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

-- 
James Hawkins
-------------- next part --------------
diff --git a/dlls/msi/files.c b/dlls/msi/files.c
index ae675e9..0f8f1d9 100644
--- a/dlls/msi/files.c
+++ b/dlls/msi/files.c
@@ -615,6 +615,9 @@ static UINT ready_media(MSIPACKAGE *pack
         if (type == DRIVE_CDROM || type == DRIVE_REMOVABLE)
             found = source_matches_volume(mi, source_dir);
 
+        if (!found)
+            found = GetFileAttributesW(mi->cabinet) != INVALID_FILE_ATTRIBUTES;
+
         msi_free(source_dir);
     }
 
-- 
1.4.1