xwayland: Initialise values in xwlVidModeGetGamma()
ProcVidModeGetGamma() relies on GetGamma() to initialise values if it
returns TRUE. Without this, we're sending uninitialised values to
clients.
Fixes: #1040 (closed)
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ProcVidModeGetGamma() relies on GetGamma() to initialise values if it
returns TRUE. Without this, we're sending uninitialised values to
clients.
Fixes: #1040 (closed)