hhctrl.ocx: Check the filename param before dereferencing it

[James Hawkins]

Hi,

Changelog:
* Check the filename param before dereferencing it.

 dlls/hhctrl.ocx/hhctrl.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

-- 
James Hawkins
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