fix whitespace violations in test scripts

These violations are simply wrong, but were never caught
because whitespace policy checking is turned off in the test
scripts.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3903-stash.sh

@@ -41,7 +41,7 @@ test_expect_success 'apply needs clean working directory' '
 	echo 4 > other-file &&
 	git add other-file &&
 	echo 5 > other-file &&
- 	test_must_fail git stash apply
+	test_must_fail git stash apply
 '
 
 test_expect_success 'apply stashed changes' '