winemac: Handle failure to get clipboard format name; don't use uninitialized buffer.

[Ken Thomases]

---
dlls/winemac.drv/clipboard.c |    8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-winemac-Handle-failure-to-get-clipboard-format-name-.patch
Type: text/x-patch
Size: 865 bytes
Desc: not available
URL: <http://www.winehq.org/pipermail/wine-patches/attachments/20130408/6c20e10b/attachment.bin>