nouveau: nv30: Do not use assert to return NULL

diff --git a/src/gallium/drivers/nv30/nv30_fragtex.c b/src/gallium/drivers/nv30/nv30_fragtex.c
index 822e1d8..a2ce947 100644 (file)
--- a/src/gallium/drivers/nv30/nv30_fragtex.c
+++ b/src/gallium/drivers/nv30/nv30_fragtex.c
@@ -69,7 +69,7 @@ nv30_fragtex_build(struct nv30_context *nv30, int unit)
 
        tf = nv30_fragtex_format(pt->format);
        if (!tf)
-               assert(0);
+               return NULL;
 
        txf  = tf->format;
        txf |= ((pt->last_level>0) ? NV34TCL_TX_FORMAT_MIPMAP : 0);