Fix DPB flush when IDR subpicture is the first subpicture in picture

6 jobs for !2009 with fix_1456_DPB_flush in 14 minutes and 4 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Build
passed #20343
macos
build_macos

00:04:52

passed #20344
ubuntu1604
build_ubuntu1604

00:05:38

passed #20345
ubuntu1804
build_ubuntu1804

00:05:25

passed #20346
ubuntu1804-gcc8
build_ubuntu1804-gcc8

00:05:57

passed #20347
vc191x
build_vc191x

00:14:00

passed #20348
vc192x
build_vc192x

00:14:02