Index: pptpd/bcrelay.c
===================================================================
--- pptpd.orig/bcrelay.c	2009-04-14 13:29:01.000000000 +0200
+++ pptpd/bcrelay.c	2009-04-14 13:33:20.000000000 +0200
@@ -381,12 +381,12 @@ int main(int argc, char **argv) {
                         return 1;
                 }
   }
-  if (ifin == "") {
+  if (ifin[0] == '\0') {
        syslog(LOG_INFO,"Incoming interface required!");
        showusage(argv[0]);
        _exit(1);
   }
-  if (ifout == "" && ipsec == "") {
+  if (ifout[0] == '\0' && ipsec[0] == '\0') {
        syslog(LOG_INFO,"Listen-mode or outgoing or IPsec interface required!");
        showusage(argv[0]);
        _exit(1);
@@ -868,7 +868,7 @@ discoverActiveInterfaces(int s) {
     // IPSEC tunnels are a fun one.  We must change the destination address
     // so that it will be routed to the correct tunnel end point.
     // We can define several tunnel end points for the same ipsec interface.
-    } else if (ipsec != "" && strncmp(ifs.ifc_req[i].ifr_name, "ipsec", 5) == 0) {
+    } else if (ipsec[0] != '\0' && strncmp(ifs.ifc_req[i].ifr_name, "ipsec", 5) == 0) {
       if (strncmp(ifs.ifc_req[i].ifr_name, ipsec, 6) == 0) {
         struct hostent *hp = gethostbyname(ipsec+7);
         ioctl(s, SIOCGIFINDEX, &ifs.ifc_req[i]);