bug#39738: ffmpeg-4.2.2 fails to build on native i686-linux

[ndre]

I'm also hitting this bug, though the failing tests are
different. Here, audiodsp fails. Current commit is
aac148a87b9a79b9992b8b1a9d76c217175d4a88.

Test checkasm-audiodsp failed. Look at tests/data/fate/checkasm-audiodsp.err 
for details.
make: *** [tests/Makefile:237: fate-checkasm-audiodsp] Error 1
make: *** Waiting for unfinished jobs....
TEST    checkasm-bswapdsp

Test suite failed, dumping logs.
command "make" "fate" "-j" "2" failed with status 2

----------------------------------------------------

tests/data/fate/checkasm-audiodsp.err:

checkasm: using random seed 854121083
MMX:
 - audiodsp.audiodsp [OK]
MMXEXT:
 - audiodsp.audiodsp [OK]
SSE:
 - audiodsp.audiodsp [OK]
SSE2:
 - audiodsp.audiodsp [OK]
SSSE3:
   audiodsp.vector_clip_int32_ssse3 (audiodsp.c:111)
 - audiodsp.audiodsp [FAILED]
checkasm: 1 of 6 tests have failed

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Full log attached.

nihy0hya21wm4dpqv7iq2z8q80qq92-ffmpeg-4.2.2.drv.bz2
Description: nihy0hya21wm4dpqv7iq2z8q80qq92-ffmpeg-4.2.2.drv.bz2

signature.asc
Description: PGP signature