Log Message:
bchunk: Update to 1.2.2

1.2.2 - Nov 14 2017 - Hessu

	Fixes CVE-2017-15953, a heap-based buffer overflow.
	Fix provided by Yegor Timoshenko.

	Fixes CVE-2017-15955, Access violation near NULL on destination
	operand and crash when processing a malformed CUE (.cue) file.
	Fix provided by Yegor Timoshenko.

	Fix wrong track size calculation when having multiple tracks in
	one image. (Closes debian bug: #261274).
	Fix provided by Piotr Kaczuba.

	Clarify manual page for input/output file types
	Improvement from Reuben Thomas, debian bug: #503151