bpo-37122: Make co->co_argcount represent the total number of positonal arguments in the code object (GH-13726)

diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index 1561021..652af45 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -640,7 +640,7 @@
 code_info_tricky = """\
 Name:              tricky
 Filename:          (.*)
-Argument count:    3
+Argument count:    5
 Positional-only arguments: 2
 Kw-only arguments: 3
 Number of locals:  10