#12 compilation issue with gcc 3.3

[Volker Börchers]

The statement

assert( c > 0 && c < 256 );

leads to a "comparison is always true..." warning with
gcc 3.3, so I have put a

#if ! defined(__GNUC__) || (__GNUC__ < 3)

around it. Perhaps better: omit the assert completely
since c is defined as uchar which satisfies the
condition by definition on any platform.

[Volker Börchers]

unified diff