qtmux: always fix PTS < DTS

Doing so only when the DTS needs to be adjusted means that we may
end up with "negative" PTS values in the resulting file when the
DTS didn't require adjustment, and the first PTS is inferior to
the first DTS.
18 jobs for fix-qtmux-negative-ts in 24 minutes and 59 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Preparation
passed #346912
gst indent

00:00:34

passed #346911
manifest

00:00:42

 
  Build
passed #346913
build fedora x86_64

00:08:19

passed #346914
build nodebug fedora x86_64

00:08:39

passed #346915
build static fedora x86_64

00:12:13

passed #346916
build static nodebug fedora x86_64

00:09:56

 
  Test
failed #346917
check fedora

00:03:33

failed #346918
integration testsuites fedora

00:12:01

 
  Full Builds
skipped #346920
build cerbero android universal
skipped #346921
build cerbero cross win32
skipped #346922
build cerbero cross win64
skipped #346919
build cerbero fedora x86_64
skipped #346923
gst-macos-10.14
build cerbero macos x86_64
 
  Full Tests
skipped #346925
valgrind bad
skipped #346926
valgrind ges
skipped #346924
valgrind good
 
  Apps
skipped #346927
android universal examples
 
  Deploy
skipped #346928
documentation
 
Name Stage Failure
failed
integration testsuites fedora Test
           Total: 1330
Uploading artifacts...
gst-build/build/meson-logs/: found 2 matching files
validate-logs: found 53611 matching files

Uploading artifacts to coordinator... ok
id=346918 responseStatus=201 Created token=shovDXAm
Uploading artifacts...
validate-logs/*.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=346918 responseStatus=201 Created token=shovDXAm
ERROR: Job failed: exit code 1
failed
check fedora Test
           Total: 3033
Uploading artifacts...
gst-build/build/meson-logs/: found 2 matching files
validate-logs: found 3448 matching files

Uploading artifacts to coordinator... ok
id=346917 responseStatus=201 Created token=xySLmazw
Uploading artifacts...
validate-logs/*.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=346917 responseStatus=201 Created token=xySLmazw
ERROR: Job failed: exit code 1