Resolve merge failure: an OutputDevice parameter not WorkWindow.

Change-Id: I366fcab22550f5d386af7ed3be0ad25456317b7d
diff --git a/vcl/workben/vcldemo.cxx b/vcl/workben/vcldemo.cxx
index 043c062..b6c96e2 100644
--- a/vcl/workben/vcldemo.cxx
+++ b/vcl/workben/vcldemo.cxx
@@ -1660,7 +1660,7 @@ class OpenGLTests
    OpenGLContext *mpA;
    OpenGLContext *mpB;

    static OpenGLSalGraphicsImpl *getImpl(const VclPtr<WorkWindow> &xOut)
    static OpenGLSalGraphicsImpl *getImpl(const VclPtr<OutputDevice> &xOut)
    {
        SalGraphics *pGraphics = xOut->GetGraphics();
        return dynamic_cast<OpenGLSalGraphicsImpl *>(pGraphics->GetImpl());