Invalid argument supplied for foreach() in trace.api.inc on line 267

Hello

after application of your patch for Drupal5 i tried to do some debugging and recognized a long list of warnings.
To see the value of $args I inserted some lines including a call to var_dump, so the line numbers differ a bit from the original ones.
Here is the output:

Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
array(1) { [0]=> string(89) "/home/www/web14/html/drupal/modules/location/contrib/location_views/location_views.module" } NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
array(1) { [0]=> string(57) "/home/www/web14/html/drupal/modules/location/location.inc" } array(1) { [0]=> string(60) "/home/www/web14/html/drupal/modules/location/location.module" } NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL
Warning: Invalid argument supplied for foreach() in /home/www/web14/html/drupal/modules/trace/trace.api.inc on line 272
NULL