Fix crash in exec when unicode filename can't be decoded.
I can't think of an easy way to test this behavior. It only occurs
when the file system default encoding and the interpreter default
encoding are different, such that you can open the file but not decode
its name.
diff --git a/Misc/NEWS b/Misc/NEWS
index d7eab9c..4428670 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -121,6 +121,7 @@
- with and as are now keywords.
+- Bug #1664966: Fix crash in exec if Unicode filename can't be decoded.
Library
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