fixup a Python query, it didn't select something with a location

Author: erik-krogh

python/ql/src/Variables/UnusedLocalVariable.ql

@@ -43,4 +43,4 @@ where
   unused_local(unused, v) and
   // If unused is part of a tuple, count it as unused if all elements of that tuple are unused.
   forall(Name el | el = unused.getParentNode().(Tuple).getAnElt() | unused_local(el, _))
-select v, "Variable " + v.getId() + " is not used"
+select unused, "Variable " + v.getId() + " is not used"

python/ql/test/query-tests/Variables/unused/UnusedLocalVariable.expected

@@ -1,5 +1,5 @@
-| Local Variable a | Variable a is not used |
-| Local Variable b | Variable b is not used |
-| Local Variable c | Variable c is not used |
-| Local Variable var | Variable var is not used |
-| Local Variable x | Variable x is not used |
+| variables_test.py:29:5:29:5 | x | Variable x is not used |
+| variables_test.py:89:5:89:5 | a | Variable a is not used |
+| variables_test.py:89:7:89:7 | b | Variable b is not used |
+| variables_test.py:89:9:89:9 | c | Variable c is not used |
+| variables_test.py:95:5:95:7 | var | Variable var is not used |

python/ql/test/query-tests/Variables/unused_local_nonlocal/UnusedLocalVariable.expected

@@ -1 +1 @@
-| Local Variable test | Variable test is not used |
+| variables_test.py:32:9:32:12 | test | Variable test is not used |