Peephole constant folding had missed UNARY_POSITIVE.
diff --git a/Misc/NEWS b/Misc/NEWS
index 96ee2ac..8830b7d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and Builtins
 -----------------
 
+- Peephole constant folding had missed UNARY_POSITIVE.
+
 - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
   fixes the problem of some exceptions being thrown at shutdown when the
   interpreter is killed. Patch by Adam Olsen.