Fix a small extract_variable issue, fixes #1611

test/refactor/extract_variable.py

@@ -17,6 +17,15 @@ def test():
     a = 30 + b
     return test(100, (a, c) + 1)
 # -------------------------------------------------- simple-3
+foo = 3.1
+#? 8 text {'new_name': 'bar'}
+x = int(foo + 1)
+# ++++++++++++++++++++++++++++++++++++++++++++++++++
+foo = 3.1
+#? 8 text {'new_name': 'bar'}
+bar = foo + 1
+x = int(bar)
+# -------------------------------------------------- simple-4
 #? 13 text {'new_name': 'zzx.x'}
 test(100, {1  |1: 2 + 3})
 # ++++++++++++++++++++++++++++++++++++++++++++++++++