t9002: work around shells that are unable to set COLUMNS to 1

In t9002-column.sh, file with expected output was shared between two
test cases, but set in the first one. Since the first test case can
now be skipped, setting up the expected output is moved outside of the
test case.

Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9002-column.sh

@@ -50,8 +50,7 @@ EOF
 	test_cmp expected actual
 '
 
-test_expect_success 'COLUMNS = 1' '
-	cat >expected <<\EOF &&
+cat >expected <<\EOF
 one
 two
 three
@@ -64,6 +63,8 @@ nine
 ten
 eleven
 EOF
+
+test_expect_success COLUMNS_CAN_BE_1 'COLUMNS = 1' '
 	COLUMNS=1 git column --mode=column <lista >actual &&
 	test_cmp expected actual
 '