Use a saner way to check for non-trivial exception patterns. Not everything...

Use a saner way to check for non-trivial exception patterns. Not everything has an entry, but everything in a temp probably has a reason for being there.

Cython/Compiler/Nodes.py

@@ -7168,7 +7168,7 @@ class ExceptClauseNode(Node):
 
         if self.pattern:
             has_non_literals = not all(
-                pattern.is_literal or (pattern.entry and pattern.entry.is_const)
+                pattern.is_literal or pattern.is_simple() and not pattern.is_temp
                 for pattern in self.pattern)
 
             if has_non_literals: