CVS renato: Fixed a possible core dump in module_kill() when using startup modules.

[FVWM CVS]

CVSROOT:        /home/cvs/fvwm
Module name:    fvwm
Changes by:     renato  07/06/21 08:27:50

Modified files:
        .              : ChangeLog 
        fvwm           : module_list.c 

Log message:
Fixed a possible core dump in module_kill() when using startup modules.