[try2] msi: Properly handle return value and type set by RegQueryValueEx.

[Misha Koshelev]

I noticed another error in the same line so I thought I'd just resubmit the patch
(replaces "msi: Do not use type value if call to RegQueryValueEx failed"), needed
for bug 8678.

http://msdn2.microsoft.com/en-us/library/ms724911.aspx
A call to RegQueryValueEx with a NULL data pointer and a valid size pointer returns
ERROR_SUCCESS if the size pointer is filled, _not_ ERROR_MORE_DATA, which is returned
if a valid data pointer is passed.
---
 dlls/msi/action.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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