(mail_send0): Bugfix. A dot ends the message

only if it is the only character on the line. Thanks
to Thomas Esser <te@dbs.uni-hannover.de> for noticing.

@@ -193,7 +193,8 @@ mail_send0 (struct send_environ *env, int save_to)
 
 
       int_cnt = 0;
       int_cnt = 0;
 
 
-      if (buf[0] == '.' && util_getenv (NULL, "dot", Mail_env_boolean, 0) == 0)
+      if (strcmp (buf, ".") == 0
+	  && util_getenv (NULL, "dot", Mail_env_boolean, 0) == 0)
 	done = 1;
 	done = 1;
       else if (util_getenv (&escape, "escape", Mail_env_string, 0) == 0
       else if (util_getenv (&escape, "escape", Mail_env_string, 0) == 0
                && buf[0] == escape[0])
                && buf[0] == escape[0])