stop crash when debugging

diff --git a/src/mesa/drivers/dri/i830/i830_debug.c b/src/mesa/drivers/dri/i830/i830_debug.c
index 84f3216..eee48f1 100644 (file)
--- a/src/mesa/drivers/dri/i830/i830_debug.c
+++ b/src/mesa/drivers/dri/i830/i830_debug.c
@@ -291,7 +291,7 @@ void i830VertexSanity( i830ContextPtr imesa, drmI830Vertex vertex )
                 remaining / vfmt_size);
       }
    }
-   if (1) {
+   if (vfmt_size) {
       fprintf(stderr, "\n\nPrim name (%s), vertices (%d)\n",
              prim_name,
              size / vfmt_size);