Fold in some decompile changes

uncompyle6/semantics/gencomp.py

@@ -13,7 +13,7 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Generators and comprehenison functions
+Generators and comprehension functions
 """
 
 
@@ -185,7 +185,13 @@ class ComprehensionMixin:
         self.preorder(tree[iter_index])
         self.prec = p
 
-    def comprehension_walk_newer(self, node, iter_index: int, code_index: int = -5):
+    def comprehension_walk_newer(
+        self,
+        node,
+        iter_index: Optional[int],
+        code_index: int = -5,
+        collection_node=None,
+    ):
         """Non-closure-based comprehensions the way they are done in Python3
         and some Python 2.7. Note: there are also other set comprehensions.
         """