ncd/value_utils.h: simplify some code using cstrings
ncd/value_utils.h: simplify some code using cstrings

bawaaaaah/badvpn,ambrop72/badvpn-googlecode-export,fragmede/badvpn,atavism/badvpn,arevindh/badvpn,adelshokhy112/badvpn,henryhwang/badvpn,fffw/badvpn,bawaaaaah/badvpn,Rastii/badvpn,fragmede/badvpn,ambrop72/badvpn-googlecode-export,kaliii/badvpn,fffw/badvpn,Qnex93/badvpn,kaliii/badvpn,fffw/badvpn,bakhet/badvpn,Qnex93/badvpn,ambrop72/badvpn-googlecode-export,fffw/badvpn,bakhet/badvpn,nuwaf/badvpn,bawaaaaah/badvpn,Rastii/badvpn,Qnex93/badvpn,atavism/badvpn,henryhwang/badvpn,walterDurin/badvpn,adelshokhy112/badvpn,Rastii/badvpn,fffw/badvpn,bawaaaaah/badvpn,arevindh/badvpn,fragmede/badvpn,arevindh/badvpn,fragmede/badvpn,henryhwang/badvpn,Rastii/badvpn,bakhet/badvpn,kaliii/badvpn,adelshokhy112/badvpn,kaliii/badvpn,bakhet/badvpn,walterDurin/badvpn,arevindh/badvpn,bakhet/badvpn,adelshokhy112/badvpn,Qnex93/badvpn,ambrop72/badvpn-googlecode-export,arevindh/badvpn,fragmede/badvpn,henryhwang/badvpn,ambrop72/badvpn-googlecode-export,nuwaf/badvpn,atavism/badvpn,nuwaf/badvpn,Rastii/badvpn,bawaaaaah/badvpn,atavism/badvpn,nuwaf/badvpn,Qnex93/badvpn,walterDurin/badvpn,walterDurin/badvpn,atavism/badvpn,nuwaf/badvpn,adelshokhy112/badvpn,henryhwang/badvpn,kaliii/badvpn,walterDurin/badvpn