t3407: rename a variable

$dotest holds the name of the rebase state directory and was named
after the state directory used at the time the test was added. As we
no longer use that name rename the variable to reflect its purpose.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3407-rebase-abort.sh

@@ -21,43 +21,43 @@ test_expect_success setup '
 
 testrebase() {
 	type=$1
-	dotest=$2
+	state_dir=$2
 
 	test_expect_success "rebase$type --abort" '
 		# Clean up the state from the previous one
 		git reset --hard pre-rebase &&
 		test_must_fail git rebase$type main &&
-		test_path_is_dir "$dotest" &&
+		test_path_is_dir "$state_dir" &&
 		git rebase --abort &&
 		test_cmp_rev to-rebase pre-rebase &&
-		test ! -d "$dotest"
+		test ! -d "$state_dir"
 	'
 
 	test_expect_success "rebase$type --abort after --skip" '
 		# Clean up the state from the previous one
 		git reset --hard pre-rebase &&
 		test_must_fail git rebase$type main &&
-		test_path_is_dir "$dotest" &&
+		test_path_is_dir "$state_dir" &&
 		test_must_fail git rebase --skip &&
 		test_cmp_rev HEAD main &&
 		git rebase --abort &&
 		test_cmp_rev to-rebase pre-rebase &&
-		test ! -d "$dotest"
+		test ! -d "$state_dir"
 	'
 
 	test_expect_success "rebase$type --abort after --continue" '
 		# Clean up the state from the previous one
 		git reset --hard pre-rebase &&
 		test_must_fail git rebase$type main &&
-		test_path_is_dir "$dotest" &&
+		test_path_is_dir "$state_dir" &&
 		echo c > a &&
 		echo d >> a &&
 		git add a &&
 		test_must_fail git rebase --continue &&
 		test_cmp_rev ! HEAD main &&
 		git rebase --abort &&
 		test_cmp_rev to-rebase pre-rebase &&
-		test ! -d "$dotest"
+		test ! -d "$state_dir"
 	'
 
 	test_expect_success "rebase$type --abort does not update reflog" '