Tidy ifelsemstmt check

test/simple_source/bug37/10_extendedargifelse.py

@@ -1,3 +1,10 @@
+# This is RUNNABLE!
+
+"""This program is self-checking!"""
+
+# Bug was handling if which has EXTENDED_ARG
+# See https://github.com/rocky/python-uncompyle6/pull/406
+
 aa = 0
 ab = 0
 ac = 0
@@ -261,4 +268,5 @@ var = True
 if var:
     aa = 1
 else:
-    aa = 2
+    aa = 2
+assert aa == 1