anv: add a check for depthStencilState before using it
Fixes: e4590c07 ("anv: depth/stencil dynamic state support") Closes: #3375 (closed) Signed-off-by: Tapani Pälli tapani.palli@intel.com
Fixes: e4590c07 ("anv: depth/stencil dynamic state support") Closes: #3375 (closed) Signed-off-by: Tapani Pälli tapani.palli@intel.com