st/nine: Fix invalid attempt to use indirect draws.

Since commit 6d7177f01b, radeonsi
would take a different path if info->indirect_params was not
initialized properly.  Nine was not initializating this field.

Signed-off-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/state_trackers/nine/device9.c

@@ -2935,6 +2935,7 @@ init_draw_info(struct pipe_draw_info *info,
     info->restart_index = 0;
     info->count_from_stream_output = NULL;
     info->indirect = NULL;
+    info->indirect_params = NULL;
 }
 
 HRESULT NINE_WINAPI