gstgiosrc: Don't leak scheme string in gst_gio_src_query()

Add a g_free() in the code path that forwards the query to the parent
handler.

Part-of: <gstreamer/gst-plugins-base!1078>
36 jobs for !1078 with gio-dont-leak-scheme in 26 minutes and 51 seconds (queued for 4 seconds)
latest detached
Status Job ID Name Coverage
  Build Docker
passed #8177636
alpine amd64 manifest builder docker

00:00:43

passed #8177635
android docker

00:00:40

passed #8177634
cerbero fedora amd64 docker

00:00:29

passed #8177633
fedora amd64 docker

00:00:39

passed #8177637
gst-indent amd64 docker

00:00:29

passed #8177638
windows shell 1809
windows amd64 docker

00:00:08

 
  Preparation
passed #8177641
check allow-edit

00:00:09

passed #8177640
gst indent

00:00:09

passed #8177639
manifest

00:00:25

 
  Build
passed #8177650
gstreamer
build cerbero cross-android universal

00:13:52

passed #8177654
gst-ios-14.3
build cerbero cross-ios universal

00:21:07

passed #8177651
gstreamer
build cerbero cross win32

00:09:41

passed #8177652
gstreamer
build cerbero cross win64

00:08:11

passed #8177649
gstreamer
build cerbero fedora x86_64

00:06:05

passed #8177653
gst-macos-11.1
build cerbero macos x86_64

00:12:15

passed #8177655
docker windows gstreamer-windows 1809
build cerbero msvc x86_64

00:11:48

passed #8177645
build clang fedora x86_64

00:08:16

manual #8177648
docker windows 1809 allowed to fail manual
build msys2
passed #8177642
build nodebug fedora x86_64

00:07:44

passed #8177643
build static fedora x86_64

00:07:48

passed #8177644
build static nodebug fedora x86_64

00:07:44

passed #8177646
docker windows 1809
build vs2017 amd64

00:12:02

passed #8177647
docker windows 1809
build vs2017 x86

00:11:33

 
  Test
passed #8177656
gstreamer
check fedora

00:10:23

passed #8177657
gstreamer
integration testsuites fedora 1/4

00:16:16

passed #8177658
gstreamer
integration testsuites fedora 2/4

00:21:20

passed #8177659
gstreamer
integration testsuites fedora 3/4

00:25:02

passed #8177660
gstreamer
integration testsuites fedora 4/4

00:24:45

passed #8177664
gstreamer
valgrind bad

00:06:25

passed #8177661
gstreamer
valgrind base

00:11:02

passed #8177665
gstreamer
valgrind ges

00:06:35

passed #8177662
gstreamer
valgrind good

00:12:19

passed #8177663
gstreamer
valgrind ugly

00:08:27

 
  Integrate
passed #8177666
cross-android universal examples

00:06:02

passed #8177668
gst-ios-14.3
cross-ios universal examples

00:04:27

passed #8177667
documentation

00:10:02