[Nouveau] [Mesa3d-dev] [PATCH 2/2] st: don't assert on empty fragment program

[Luca Barbieri]

Breakpoint 3, _mesa_ProgramStringARB (target=34820, format=34933,
len=70, string=0x85922ba) at shader/arbprogram.c:434
434	   GET_CURRENT_CONTEXT(ctx);
$31 = 0x85922ba "!!ARBfp1.0\n    \n    OPTION
ARB_precision_hint_fastest;\n    \n\n\n    END\n"

Not sure why Sauerbraten does this, but it does, at least on my system
(Ubuntu Karmic, nv40 driver) and it should be legal.