FIX #86

[hrotkogabor]

No description provided.

[Craig-At-Ollie]

I ran into this same build failure on Xubuntu 26 (Xfce 4.20) with a recent GCC. Two functions in common/ have prototype/definition mismatches that newer GCC now rejects as hard errors rather than warnings.

Both compiled fine historically because in C89/C99/C17, an empty parameter list () means "unspecified arguments" - the compiler doesn't check arity against it. But GCC's newer default C standard (C23) changed this: () now means "takes zero arguments," equivalent to (void). So these two spots go from silently-fine to a hard compile error: too many arguments to function / conflicting types.