uri: fix roundtrip for file:// uris

Slashes got lost.

Fixes #312
19 jobs for uri-roundtrip in 18 minutes and 6 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Preparation
passed #317684
gst indent

00:00:30

passed #317683
manifest

00:00:35

 
  Build
passed #317685
build fedora x86_64

00:04:36

passed #317686
build nodebug fedora x86_64

00:05:05

 
  Test
failed #317800
check fedora

00:03:32

passed #317688
integration testsuites fedora

00:08:52

failed #317687
check fedora

00:10:23

 
  Full Builds
skipped #317690
build cerbero android universal
skipped #317691
build cerbero cross win32
skipped #317692
build cerbero cross win64
skipped #317689
build cerbero fedora x86_64
 
  Full Tests
skipped #317697
valgrind bad
skipped #317694
valgrind base
skipped #317693
valgrind core
skipped #317698
valgrind ges
skipped #317695
valgrind good
skipped #317696
valgrind ugly
 
  Apps
skipped #317699
android universal examples
 
  Deploy
skipped #317700
documentation
 
Name Stage Failure
failed
check fedora Test
           Total: 3005
Uploading artifacts...
gst-build/build/meson-logs/: found 2 matching files
validate-logs: found 3417 matching files
Uploading artifacts to coordinator... ok id=317800 responseStatus=201 Created token=hSpxPm7z
Uploading artifacts...
validate-logs/*.xml: found 1 matching files
Uploading artifacts to coordinator... ok id=317800 responseStatus=201 Created token=hSpxPm7z
ERROR: Job failed: exit code 1