vc1: Fix mb_height for field pictures

Tables are always allocated now with sufficient space for either progressive
or interlaced content. The alternative would be to detect a change
and reallocate.

This fixes decoding of a sample.

Signed-off-by: Martin Storsjö <martin@martin.st>
png_parser: Fix parsing on big endian

Since pc.state is populated by shifting in from the end of the
32 bit word, the content within pc.state is already in native endian
and should not be read with the AV_R{L,B} functions.

This was already done correctly for state64 above.

This fixes the fate-corepng test on big endian.

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit 'd8fd183683b7495566b7e510a6536ae2efe8dfed'

* commit 'd8fd183683b7495566b7e510a6536ae2efe8dfed':
  vc1: Fix mb_height for field pictures

See: 017e234c204f8ffb5f85a073231247881be1ac6f
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  png_parser: Fix parsing on big endian

See: 3d42addf336739a69aee47891413a46e4f64995b
Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavf/segment: increase logging level for message with segment start information

Help debugging.
lavf/concatdec: fix crash in case a file in script cannot be opened
avcodec/dirac_dwt: initialize support value for fidelity wavelet

Avoids use of uninitialized memory
Fixes: msan_uninit-mem_7f15e1988a6e_2748_RL_420p_ffdirac.drc
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>