#23539: Set Content-Length to 0 for PUT, POST, and PATCH if body is None.

Some http servers will reject PUT, POST, and PATCH requests if they
do not have a Content-Length header.

Patch by James Rutherford.
diff --git a/Misc/ACKS b/Misc/ACKS
index 752b83a..8b29171 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1171,6 +1171,7 @@
 Mark Russell
 Rusty Russell
 Nick Russo
+James Rutherford
 Chris Ryland
 Constantina S.
 Patrick Sabin