Source lang-default rather than open-coding

the setting/exporting of LANG, LC_ALL, and LANGUAGE.

diff --git a/tests/rm/r-1 b/tests/rm/r-1
index 358c8781e9f1a7640817d99057a4a13da67ecc89..7c21557db879a30aaf723ace4def6afa1120ea31 100755 (executable)
--- a/tests/rm/r-1
+++ b/tests/rm/r-1
@@ -35,10 +35,7 @@ if test $framework_failure = 1; then
   exit 1
 fi
 
-LANGUAGE=C
-export LANGUAGE
-LANG=C
-export LANG
+. $srcdir/../lang-default
 
 fail=0
 rm --verbose -r $tmp/a $tmp/b > $tmp/$test.O || fail=1