core.php queries HTTP_USER_AGENT without testing for existance. This gives errors e.g. when using the "core/checkin.php" for cvs integration (only if $g_display_errors is set to strict reporting of warnings).

Suggested Fix:

core.php 1.10 -> 1.11

diff -u -r1.10 -r1.11
--- core.php 20 Oct 2008 09:25:07 -0000 1.10
+++ core.php 20 Oct 2008 10:21:04 -0000 1.11
@@ -145,7 +145,13 @@

require_once( $t_core_path.'database_api.php' );

# Basic browser detection

• $t_user_agent = $_SERVER['HTTP_USER_AGENT'];

• if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) {

• $t_user_agent = $_SERVER['HTTP_USER_AGENT'];

• } else {

• $t_user_agent = '';

• }

• $t_browser_name = 'Normal';
  if ( strpos( $t_user_agent, 'MSIE' ) ) {