r600g: Fixed a bo reference leak in the draw module.

Signed-off-by: Tilman Sauerbeck <tilman@code-monkey.de>

src/gallium/drivers/r600/r600_draw.c

@@ -122,6 +122,9 @@ static int r600_draw_common(struct r600_draw *draw)
 		r600_flush(draw->ctx, 0, NULL);
 		r = radeon_ctx_set_draw(&rctx->ctx, &rctx->draw);
 	}
+
+	radeon_state_fini(&draw->draw);
+
 	return r;
 }
 
@@ -133,6 +136,8 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 
 	assert(info->index_bias == 0);
 
+	memset(&draw, 0, sizeof(draw));
+
 	draw.ctx = ctx;
 	draw.mode = info->mode;
 	draw.start = info->start;