[PATCH v2 4/6] windowscodecs: Implement DdsDecoder_Wine_Initialize().

[Ziqing Hui]

Code in DdsDecoder_Initialize() is moved to DdsDecoder_Wine_Initialize().
And DdsDecoder_Initialize() is implemented on top of DdsDecoder_Wine_Initialize().

Signed-off-by: Ziqing Hui <zhui(a)codeweavers.com>
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v2: Lock critical section in DdsDecoder_Initialize().

 dlls/windowscodecs/ddsformat.c       | 125 +++++++++++++++------------
 dlls/windowscodecs/tests/ddsformat.c |   3 -
 2 files changed, 72 insertions(+), 56 deletions(-)

[Esme Povirk (they/them)]

I think the lock should already be held during the call to
IWICWineDecoder_Initialize. I don't want to think about what will
happen if some other thread grabs the lock between that and checking
the file type.