CVS domivogt: * Fixed compile error when building without Xft.

[FVWM CVS]

CVSROOT:        /home/cvs/fvwm
Module name:    fvwm
Changes by:     domivogt        05/12/21 16:19:07

Modified files:
        fvwm           : fvwm.1.in 
        libs           : Fft.c 

Log message:
* Fixed compile error when building without Xft.