Description of problem:
gdmflexiserver started crashing on me after updating from rawhide yesterday:

Program received signal SIGSEGV, Segmentation fault.
0x00bf6eed in __strncasecmp (s1=0x0, s2=0x8051ab4 "true", n=4) at strncase.c:68
68        while ((result = TOLOWER (*p1) - TOLOWER (*p2++)) == 0)
(gdb) bt
#0  0x00bf6eed in __strncasecmp (s1=0x0, s2=0x8051ab4 "true", n=4)
    at strncase.c:68
#1  0x00b125d4 in g_strncasecmp (s1=0x0, s2=0x8051ab4 "true", n=4)
    at gstrfuncs.c:1903
#2  0x0804e343 in gdm_config_get_xservers (flexible=1) at gdmconfig.c:240
#3  0x0804c109 in main (argc=Cannot access memory at address 0x0
) at gdmflexiserver.c:537
#4  0x00ba16b4 in __libc_start_main (main=0x804bedf <main>, argc=1,
    ubp_av=0xbf8b7834, init=0x8050d28 <__libc_csu_init>,
    fini=0x8050d20 <__libc_csu_fini>, rtld_fini=0xb7cdd0 <_dl_fini>,
    stack_end=0xbf8b782c) at libc-start.c:231
#5  0x0804afb1 in _start ()
(gdb)

Version-Release number of selected component (if applicable):


How reproducible:

Happens always

Steps to Reproduce:
1. run gdmflexiserver
2.
3.
  
Actual results:


Expected results:


Additional info: