The timezone information is allocated with `tz_info_from_location` but
never deallocated.
LeakSanitizer complains about this memory leak.
```
Direct leak of 13568 byte(s) in 424 object(s) allocated from:
/build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:95
#1 0x7f63899bab21 in g_malloc0 (/usr/lib/libglib-2.0.so.0+0x51b21)
../tests/datetime/test-timezone-gfx.c:30
#3 0x7f63899dc76a (/usr/lib/libglib-2.0.so.0+0x7376a)
```
The directory opened with `g_dir_open` is never closed, so LeakSanitizer
complains about a memory leaks.
```
Direct leak of 8 byte(s) in 1 object(s) allocated from:
/build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:86
#1 0x7f2012908ac9 in g_malloc (/usr/lib/libglib-2.0.so.0+0x51ac9)
#2 0x7f2012922aac in g_memdup (/usr/lib/libglib-2.0.so.0+0x6baac)
#3 0x7f20128ed2d5 (/usr/lib/libglib-2.0.so.0+0x362d5)
#4 0x7f20128ed338 in g_dir_open (/usr/lib/libglib-2.0.so.0+0x36338)
../tests/datetime/test-endianess.c:29
#6 0x7f201292a76a (/usr/lib/libglib-2.0.so.0+0x7376a)
#7 0x7f201292a69a (/usr/lib/libglib-2.0.so.0+0x7369a)
(/usr/lib/libglib-2.0.so.0+0x73951)
#9 0x7f201292a972 in g_test_run (/usr/lib/libglib-2.0.so.0+0x73972)
#10 0x560ad630cbff in main ../tests/datetime/test-endianess.c:66
```
"warning: passing argument 1 of ‘gtk_widget_destroy’ from incompatible
pointer type" is printed from g_clear_pointer, because it is more
type-safe now. See https://gitlab.gnome.org/GNOME/glib/issues/1425 for
more info. Add the necessary casts to suppress the warnings.
The commit targets to remove the behavior of implicit set of the language
when the user panel is clicked in g-c-c.
The behavior looks like introduced to partly resolve the bug [0] when the
gnome-initial-setup somehow did not set the language correctly. However the
gnome-initial-setup is able to handle the language nicely now.
Furthermore, the current user could not see its own language chooser in the
g-c-c User panel, instead the Region&Language panel is supposed to do the
task. And the Region&Language panel has already got a default locale set [1]
[2]. So even if the language is not set in the key file, it is less an issue
nowadays than when the issue was originally described in [0].
[0] https://bugzilla.gnome.org/show_bug.cgi?id=737216
[1] https://bugzilla.gnome.org/show_bug.cgi?id=767065
[2] https://gitlab.gnome.org/GNOME/gnome-control-center/commit/5e2ed8ehttps://gitlab.gnome.org/GNOME/gnome-control-center/merge_requests/161
gnome-nightly-oci repo has been deprecated for a while and replaced with
gnome-runtime-images[1]
The new repo also includes images with the stable GNOME runtime.
Which can be used by changing `gnome:master` to `gnome:3.28` for example.
[1] https://gitlab.gnome.org/GNOME/gnome-runtime-images
Python isn't always installed in /usr/bin. If we hard-code the path,
these tests will fail on *BSD because they install python in different
prefixes such as /usr/local and /usr/pkg.
As the main headerbar used by the shell is split, the title is not
propagated to the window. However, the "apply" header bar is not split
and the title is propagated to the toplevel GtkWindow.
Fix this issue by resetting the window title again.
Fixes https://gitlab.gnome.org/GNOME/gnome-control-center/issues/81
