oss-fuzz: exit dav1d_fuzzer after ~22 seconds

oss-fuzz uses a timeout of 25 seconds during fuzzing. It sometimes hits
this timeout with memory sanitizer. Instead of modifying the resolution
limit stop processing a sample ~22 seconds. The decoder should have
processed enough data in that time.
26 jobs for oss-fuzz_timeout in 9 minutes and 9 seconds (queued for 34 seconds)
latest
Status Job ID Name Coverage
  Style
passed #311285
amd64 debian
style-check

00:00:26

 
  Build
passed #311286
amd64 debian
build-debian

00:00:43

passed #311294
debian aarch64
build-debian-aarch64

00:01:18

passed #311295
debian aarch64
build-debian-aarch64-clang-5

00:00:52

passed #311298
debian armv7
build-debian-armv7

00:02:05

passed #311299
debian armv7
build-debian-armv7-clang-5

00:01:13

passed #311301
docker ppc64le
build-debian-ppc64le

00:01:05

passed #311287
amd64 debian
build-debian-static

00:00:45

passed #311297
debian aarch64
build-debian-werror

00:00:32

passed #311288
amd64 debian
build-debian32

00:00:46

passed #311296
macos
build-macos

00:00:51

passed #311300
amd64 debian
build-ubuntu-snap

00:00:51

passed #311292
amd64 debian
build-win-arm32

00:00:32

passed #311293
amd64 debian
build-win-arm64

00:00:35

passed #311289
amd64 debian
build-win32

00:00:48

passed #311290
amd64 debian
build-win32-unaligned-stack

00:00:47

passed #311291
amd64 debian
build-win64

00:00:57

 
  Test
passed #311302
amd64 debian
test-debian

00:00:54

passed #311308
debian aarch64
test-debian-aarch64

00:02:09

passed #311310
debian armv7
test-debian-armv7-clang-5

00:02:19

passed #311304
amd64 debian
test-debian-asan

00:02:33

passed #311305
amd64 debian
test-debian-msan

00:01:10

passed #311309
docker ppc64le
test-debian-ppc64le

00:01:30

passed #311306
amd64 debian
test-debian-ubsan

00:01:36

passed #311303
amd64 debian
test-debian-unaligned-stack

00:00:53

passed #311307
amd64 debian
test-win64

00:00:55