arm: Don't clobber callee saved registers in scalarproduct

q4-q7/d8-d15 are supposed to not be clobbered by the callee.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit d307e408d4a9ada22df443cc38be77cc5e492694)

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge remote-tracking branch 'qatar/release/0.6' into release/0.6

* qatar/release/0.6:
  arm: Don't clobber callee saved registers in scalarproduct

See: a94d12b69027955f1b01aedffc8dd8c7e96a15cc
Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/parser: reset indexes on realloc failure

Fixes Ticket2982

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit f31011e9abfb2ae75bb32bc44e2c34194c8dc40a)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/jpeglsdec: check err value for ls_get_code_runterm()

Fixes infinite loop
Fixes Ticket3086

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cc0e47b55096361723b364afa43b79a3f5619cdc)

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