swresample/swresample: fix sample drop loop end condition

Fixes Ticket3985

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit f9fefa499f0af48f47ea73c8ce0b25df0976c315)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
x86/synth_filter: add missing HAVE_YASM guard

Should fix compilation failures with --disable-yasm on some compilers

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 206167a295a5c28cec3c38f7308835b0b7e0618f)

Conflicts:

	libavcodec/x86/dcadsp_init.c