Fix two harmless shadowed variables

Author: rogerbinns

src/cursor.c

@@ -736,7 +736,7 @@ APSWCursor_dobinding(APSWCursor *self, int arg, PyObject *obj)
       return -1;
     }
 
-    int res = APSWCursor_dobinding(self, arg, converted);
+    res = APSWCursor_dobinding(self, arg, converted);
     Py_DECREF(converted);
     return res;
   }

src/session.c

@@ -1157,7 +1157,7 @@ APSWTableChange_conflict(PyObject *self_, void *Py_UNUSED(unused))
 
   for (int i = 0; i < self->table_column_count; i++)
   {
-    int res = sqlite3changeset_conflict(self->iter, i, &value);
+    res = sqlite3changeset_conflict(self->iter, i, &value);
     if (res != SQLITE_OK)
     {
       SET_EXC(res, NULL);