aasc: fix output for msrle compression.

The bottom line was invalid before.

CC:libav-stable@libav.org
(cherry picked from commit da7baaaae79b4d7d715d35ea6bcfbdd149edc177)

Conflicts:

	cmdutils.c
qtrle: fix the topmost line for 1bit

Signed-off-by: Anton Khirnov <anton@khirnov.net>
CC:libav-stable@libav.org
(cherry picked from commit 89f11f498b9c15bc71494a11a7ec560f4adf630d)

Conflicts:

	cmdutils.c
msrledec: check bounds before constructing a possibly invalid pointer,

CC:libav-stable@libav.org
(cherry picked from commit 9bd6375d5f16842306dcecde637ffe605acda26b)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
Merge commit 'b7765d00f911fe0f8fcda21b93a540f27d2ba2f5' into release/1.1

* commit 'b7765d00f911fe0f8fcda21b93a540f27d2ba2f5':
  msrledec: check bounds before constructing a possibly invalid pointer,
  qtrle: fix the topmost line for 1bit
  aasc: fix output for msrle compression.

Conflicts:
	tests/ref/fate/aasc
	tests/ref/fate/qtrle-1bit

Merged-by: Michael Niedermayer <michaelni@gmx.at>