i965: NULL check depth_mt to quiet static analysis.

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

diff --git a/src/mesa/drivers/dri/i965/brw_misc_state.c b/src/mesa/drivers/dri/i965/brw_misc_state.c
index 7e41c84..23faee6 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_misc_state.c
+++ b/src/mesa/drivers/dri/i965/brw_misc_state.c
@@ -598,7 +598,7 @@ brw_emit_depthbuffer(struct brw_context *brw)
       depth_mt = stencil_mt;
    }
 
-   if (depth_irb) {
+   if (depth_irb && depth_mt) {
       /* When 3DSTATE_DEPTH_BUFFER.Separate_Stencil_Enable is set, then
        * 3DSTATE_DEPTH_BUFFER.Surface_Format is not permitted to be a packed
        * depthstencil format.