h264: Fix a typo from the previous commit

f777504f640260337974848c7d5d7a3f064bbb45 changed a - in +

CC: libav-stable@libav.org
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  h264: Fix a typo from the previous commit

See: 76dd01ecd4ed51e0669773470ee0d8db2c2e4d3f
Merged-by: Michael Niedermayer <michaelni@gmx.at>
x86: add detection for FMA3 instruction set

Based on x264 code

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
x86: add detection for Bit Manipulation Instruction sets

Based on x264 code

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>