r600/sfn: Initialize class member m_num_src_comp in constructor.
Fix defect reported by Coverity Scan.
Uninitialized scalar field (UNINIT_CTOR) uninit_member: Non-static class member m_num_src_comp is not initialized in this constructor nor in any functions that it calls.
Signed-off-by: Vinson Lee vlee@freedesktop.org
cc: @gerddie