Fix tests under GETTEXT_POISON on git-apply

Use the i18n-specific test functions in test scripts for git-apply.
This issue was was introduced in the following commits:

    de373 i18n: apply: mark parseopt strings for translation
    3638e i18n: apply: mark strings for translation

and been broken under GETTEXT_POISON=YesPlease since.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t4012-diff-binary.sh b/t/t4012-diff-binary.sh
index ec4deea..1215ae5 100755
--- a/t/t4012-diff-binary.sh
+++ b/t/t4012-diff-binary.sh
@@ -63,7 +63,7 @@
 
 # apply needs to be able to skip the binary material correctly
 # in order to report the line number of a corrupt patch.
-test_expect_success 'apply detecting corrupt patch correctly' '
+test_expect_success C_LOCALE_OUTPUT 'apply detecting corrupt patch correctly' '
 	git diff >output &&
 	sed -e "s/-CIT/xCIT/" <output >broken &&
 	test_must_fail git apply --stat --summary broken 2>detected &&
@@ -73,7 +73,7 @@
 	test "$detected" = xCIT
 '
 
-test_expect_success 'apply detecting corrupt patch correctly' '
+test_expect_success C_LOCALE_OUTPUT 'apply detecting corrupt patch correctly' '
 	git diff --binary | sed -e "s/-CIT/xCIT/" >broken &&
 	test_must_fail git apply --stat --summary broken 2>detected &&
 	detected=`cat detected` &&