nir: Fixup algebraic test for variable-sized conversions

b2i can now take any size boolean in preparation for 1-bit booleans, so
the error message printed is slightly different.

Fixes: dca6cd9ce65 ("nir: Make boolean conversions sized just like the others")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108961
Cc: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
1 file changed