- foreach ( glob( $directory . '*', GLOB_ONLYDIR ) as $dir ) {
- $files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
+ $dirs = glob( $directory . '*', GLOB_ONLYDIR );
+ if ( $dirs ) {
+ foreach ( $dirs as $dir ) {
+ $files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
+ }