(trivial) t3303: Indent with tabs instead of spaces for consistency

The rest of the file uses tabs for indenting. Fix the one function
that doesn't.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3303-notes-subtrees.sh

@@ -168,15 +168,15 @@ INPUT_END
 }
 
 verify_concatenated_notes () {
-    git log | grep "^    " > output &&
-    i=$number_of_commits &&
-    while [ $i -gt 0 ]; do
-        echo "    commit #$i" &&
-        echo "    first note for commit #$i" &&
-        echo "    second note for commit #$i" &&
-        i=$(($i-1));
-    done > expect &&
-    test_cmp expect output
+	git log | grep "^    " > output &&
+	i=$number_of_commits &&
+	while [ $i -gt 0 ]; do
+		echo "    commit #$i" &&
+		echo "    first note for commit #$i" &&
+		echo "    second note for commit #$i" &&
+		i=$(($i-1));
+	done > expect &&
+	test_cmp expect output
 }
 
 test_expect_success 'test notes in no fanout concatenated with 2/38-fanout' 'test_concatenated_notes "s|^..|&/|" ""'