8e1b6accbd
Fixes the following build failure on MSYS2:
```
../subprojects/gstreamer/tests/check/elements/filesrc.c: In function 'test_seeking':
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: error: incomplete universal character name \U
107 | g_object_set (G_OBJECT (src), "location", TESTFILE, NULL);
| ^
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: warning: unknown escape sequence: '\A'
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: warning: unknown escape sequence: '\g'
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: warning: unknown escape sequence: '\s'
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: warning: unknown escape sequence: '\g'
../subprojects/gstreamer/tests/check/elements/filesrc.c:107:53: warning: unknown escape sequence: '\c'
```
Due to: `-DTESTFILE=\"C:\\Users\\Administrator\[...]`
https://gitlab.freedesktop.org/nirbheek/gstreamer/-/jobs/45317733
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5018>
GStreamer Editing Services -------------------------- This is a high-level library for facilitating the creation of audio/video non-linear editors. License: -------- This package and its contents are licensend under the GNU Lesser General Public License (LGPL). Dependencies: ------------- * GStreamer core * gst-plugins-base