media-video/ffmpeg: disable SEMINTERPOS (#829)

Signed-off-by: Randall <ran.dall@icloud.com>

Author: ran-dall

sys-config/ltoize/files/package.cflags/no-semantic-interposition.conf

@@ -6,6 +6,7 @@ dev-lang/jimtcl *FLAGS-="${SEMINTERPOS}" # buffer overflow error when running an
 dev-lang/swi-prolog *FLAGS-="${SEMINTERPOS}" # segfaults during build
 dev-util/umockdev *FLAGS-="${SEMINTERPOS}" # /usr/include/bits/unistd.h:145:1: error: inlining failed in call to 'always_inline' 'readlink.localalias': function not inlinable
 media-sound/ardour *FLAGS-="${SEMINTERPOS}" # ICE in record_target_from_binfo during GIMPLE pass
+media-video/ffmpeg *FLAGS-="${SEMINTERPOS}" # doesn't build, function inlining fails
 net-fs/autofs *FLAGS-="${SEMINTERPOS}" # builds but segfault in lookup_file.so
 net-libs/libiscsi *FLAGS-="${SEMINTERPOS}"
 net-print/cups *FLAGS-="${SEMINTERPOS}" # ICE