dlm_controld: fix may be used uninitialized
    
    This patch fixes the following compiler warning:
    
    daemon_cpg.c:2158:12: warning: ‘run’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     2158 |   run->info.reply_count++;
    
    It's fixed by just init the used variable to NULL and use it only if
    it's not NULL.