php/php-src — pull request #293 by Draal (2013-03-03 15:12:34+00:00)
Title: Exif crash on unknown encoding was fixed

zend_multibyte_encoding_converter returns size_t type
size_t is unsigned integer, so condition <0 is false on dummy_encoding_converter ((size_t)-1) and exif_process_unicode returns unfilled xp_field->size