Test failure in dash_mpdparser_check_mpd_client_set_methods on i686-linux

Hello,

When running meson test on i686-linux, I consistenly get this test failure:

The output from the failed tests:

54/61 elements_dash_mpd                       FAIL     0.72 s (exit status 1)

--- command ---
14:13:51 GST_STATE_IGNORE_ELEMENTS='' CK_DEFAULT_TIMEOUT='60' GST_REGISTRY='/tmp/guix-build-gst-plugins-bad-1.18.1.drv-0/build/tests/check/elements_dash_mpd.registry' GST_PLUGIN_PATH_1_0='/tmp/guix-build-gst-plugins-bad-1.18.1.drv-0/build:/gnu/store/v855llify77cgmd4xk769x5whjr1p4pc-gstreamer-1.18.1/lib/gstreamer-1.0:/gnu/store/x65kaha044c65bni115a5i8plx5rm6ch-gst-plugins-base-1.18.1/lib/gstreamer-1.0' GST_PLUGIN_LOADING_WHITELIST='gstreamer:gst-plugins-base:gst-plugins-good:gst-plugins-ugly:gst-libav:libnice:gst-plugins-bad@/tmp/guix-build-gst-plugins-bad-1.18.1.drv-0/build' GST_PLUGIN_SCANNER_1_0='/gnu/store/v855llify77cgmd4xk769x5whjr1p4pc-gstreamer-1.18.1/libexec/gstreamer-1.0/gst-plugin-scanner' GST_PLUGIN_SYSTEM_PATH_1_0='/gnu/store/7py8wcy1n42b7w2f9r8a0gswi3f3ja7v-gst-plugins-good-1.18.1/lib/gstreamer-1.0' /tmp/guix-build-gst-plugins-bad-1.18.1.drv-0/build/tests/check/elements_dash_mpd
--- stdout ---
Running suite(s): dash
99%: Checks: 119, Failures: 0, Errors: 1
../gst-plugins-bad-1.18.1/tests/check/elements/dash_mpd.c:6183:E:simpleMPD:dash_mpdparser_check_mpd_client_set_methods:0: (after this point) Received signal 11 (Segmentation fault)
Check suite dash ran in 0.469s (tests failed: 1)
--- stderr ---
noname.xml:1: parser error : Start tag expected, '<' not found
<?xml version="1.0"?>
                     ^
noname.xml:1: parser error : Opening and ending tag mismatch: MPD line 1 and NPD
sh:schema:mpd:2011"     profiles="urn:mpeg:dash:profile:isoff-main:2011"> </NPD>
                                                                               ^
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