(resend) msi: fix some NULL checking in MSI_RecordGetStringA

[Aric Stewart]

includes a few record tests with a NULL buffer
---
  dlls/msi/record.c       |    7 ++++---
  dlls/msi/tests/record.c |   10 ++++++++++
  2 files changed, 14 insertions(+), 3 deletions(-)


-------------- next part --------------
A non-text attachment was scrubbed...
Name: e898824eefcf0ac95ccfbc36b147e08b0e24a9d1.diff
Type: text/x-patch
Size: 2070 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20081217/be11a423/attachment.bin