Adjust whitespace to match the upstream exception text.

sunfishcode · sunfishcode · commit 0ff372a6b89d · 2018-10-30T13:08:42.000-07:00
This is a whitespace-only change.
diff --git a/LICENSE b/LICENSE
@@ -217,3 +217,4 @@ conflicts with the conditions of the GPLv2, you may retroactively and
 prospectively choose to deem waived or otherwise exclude such Section(s) of
 the License, but only in their entirety and only with respect to the Combined
 Software.
+
