Fix test for uintptr_t. Fixes #1568842.
Will backport.
diff --git a/Misc/NEWS b/Misc/NEWS
index 67a0a80..180059b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -170,6 +170,8 @@
 Build
 -----
 
+- Bug #1568842: Fix test for uintptr_t.
+
 - Patch #1540470, for OpenBSD 4.0.