oops, bad formula

[apps/madmutt.git] / lib-sys / unix.c

diff --git a/lib-sys/unix.c b/lib-sys/unix.c
index 4f189c1..8a1b860 100644 (file)
--- a/lib-sys/unix.c
+++ b/lib-sys/unix.c
@@ -183,7 +183,7 @@ int getdnsdomainname(char *s, ssize_t n)
 
             trailing_dot = q[-1] == '.';
             if (!trailing_dot || q > p + 1) {
-                m_strncpy(s, n, p, p - q - trailing_dot);
+                m_strncpy(s, n, p, q - trailing_dot - p);
                 safe_fclose(&f);
                 return 0;
             }