fixed make_banmask

diff --git a/tools.c b/tools.c
index 3701358b3f32f28c7ecdfbfe08cab7414b90d2b8..a6b6f531f88e8c7368773fa49ae0086258d47e63 100644 (file)
--- a/tools.c
+++ b/tools.c
@@ -436,9 +436,9 @@ char* make_banmask(char *input, char* buffer) {
         else
             nick = input;
     }
-    if(*nick == '\0') nick = NULL;
-    if(*ident == '\0') ident = NULL;
-    if(*host == '\0') host = NULL;
+    if(nick && *nick == '\0') nick = NULL;
+    if(ident && *ident == '\0') ident = NULL;
+    if(host && *host == '\0') host = NULL;
     sprintf(buffer, "%s!%s@%s", (nick ? nick : "*"), (ident ? ident : "*"), (host ? host : "*"));
     return buffer;
 }