r600/sfn: Initialize VertexStageExportForGS m_num_clip_dist member variable.
Fix warning reported by Coverity Scan. Uninitialized scalar field (UNINIT_CTOR) uninit_member: Non-static class member m_num_clip_dist is not initialized in this constructor nor in any functions that it calls. Fixes: f7df2c57 ("r600/sfn: extract class to handle the VS export to different stages") Signed-off-by:Vinson Lee <vlee@freedesktop.org> Reviewed-by:
Gert Wollny <gert.wollny@collabora.com> Part-of: <mesa/mesa!5180>