videoparseutils: Fix for wrong CEA708 minimum size check

The minimum possible size of valid CEA708 data is 3 bytes, not 7 bytes

Part-of: <gstreamer/gst-plugins-bad!2507>
33 jobs for !2507 with backport-mr-2505-into-1.18-parse-cea708-size in 30 minutes and 1 second (queued for 4 seconds)
detached
Status Name Job ID Coverage
  Build Docker
passed alpine amd64 manifest builder docker #13344330

00:00:52

passed android docker #13344329

00:00:24

passed cerbero fedora amd64 docker #13344328

00:00:39

passed fedora amd64 docker #13344327

00:00:11

passed gst-indent amd64 docker #13344331

00:00:24

 
  Preparation
passed gst indent #13344333

00:00:36

passed manifest #13344332

00:00:49

 
  Build
passed build cerbero cross-android universal #13344342
gstreamer

00:09:03

passed build cerbero cross-ios universal #13344346
gst-ios-14.3

00:20:02

passed build cerbero cross win32 #13344343
gstreamer

00:05:17

passed build cerbero cross win64 #13344344
gstreamer

00:05:51

passed build cerbero fedora x86_64 #13348097
gstreamer

00:03:34

passed build cerbero macos x86_64 #13344345
gst-macos-11.1

00:11:43

passed build clang fedora x86_64 #13344337

00:05:01

manual build msys2 #13344340
docker windows 1809 allowed to fail manual
passed build nodebug fedora x86_64 #13344334

00:05:33

passed build static fedora x86_64 #13344335

00:05:02

passed build static nodebug fedora x86_64 #13344336

00:08:21

passed build vs2017 amd64 #13344338
docker windows 1809

00:12:48

passed build vs2017 x86 #13344339
docker windows 1809

00:12:36

failed build cerbero fedora x86_64 #13347971
gstreamer

00:02:27

failed build cerbero fedora x86_64 #13347819
gstreamer

00:02:34

failed build cerbero fedora x86_64 #13347497
gstreamer

00:02:53

failed build cerbero fedora x86_64 #13344341
gstreamer

00:03:33

 
  Test
passed check fedora #13344347
gstreamer

00:06:41

passed integration testsuites fedora 1/4 #13344348
gstreamer

00:07:38

passed integration testsuites fedora 2/4 #13344349
gstreamer

00:06:52

passed integration testsuites fedora 3/4 #13344350
gstreamer

00:07:05

passed integration testsuites fedora 4/4 #13344351
gstreamer

00:07:04

passed valgrind bad #13344352
gstreamer

00:05:00

 
  Integrate
passed cross-android universal examples #13344353

00:08:53

passed cross-ios universal examples #13344355
gst-ios-14.3

00:04:07

passed documentation #13344354

00:12:38