aacsbr: Check for envelope scalefactors overflowing

This prevents various values from becoming stuck at NAN and
output to become silent
If someone knows a cleaner solution, thats welcome!

Fixes Ticket2335

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Revert "aacdec: Reconfigure output as needed, disable pop_output_configuration()"

This reverts commit 60dbf2eff92f8aa4683b6dcaba9e694890258ade.

This is not needed anymore, Ticket 1694 has been fixed differently
MAINTAINERS: update for 1.2

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