Correct shellcheck errors (and ignore world splitting when we want it)

Signed-off-by: Frederic Martinsons <frederic.martinsons@sigfox.com>

tests/run-assert-msg-test.sh

@@ -41,6 +41,7 @@ echo_v "Running gdb on assert-msg-test"
 OUT=$($LIBTOOL --mode=execute gdb --batch -x "${srcdir:-.}/assert-msg-test.gdb" ./assert-msg-test 2> $error_out) || fail "failed to run gdb"
 
 echo_v "Checking if assert message is in __glib_assert_msg"
+# shellcheck disable=SC2016
 if ! echo "$OUT" | grep -q '^$1.*"GLib:ERROR:.*assert-msg-test.c:.*:.*main.*: assertion failed: (42 < 0)"'; then
   fail "__glib_assert_msg does not have assertion message"
 fi