Remove else and finally from in_exc_handler

Author: palaviv

tests/snippets/try_exceptions.py

@@ -161,3 +161,13 @@ def __init__(self):
 except ZeroDivisionError as ex:
     assert type(ex.__cause__) == NameError
     assert ex.__context__ == None
+
+try:
+    try:
+        raise ZeroDivisionError
+    except ZeroDivisionError as ex:
+        pass
+    finally:
+        raise NameError
+except NameError as ex2:
+    assert ex2.__context__ == None

vm/src/compile.rs

@@ -637,6 +637,8 @@ impl Compiler {
             in_exc: true,
         });
 
+        self.in_exc_handler = was_in_exc_handler;
+
         // We successfully ran the try block:
         // else:
         self.set_label(else_label);
@@ -649,7 +651,6 @@ impl Compiler {
         if let Some(statements) = finalbody {
             self.compile_statements(statements)?;
         }
-        self.in_exc_handler = was_in_exc_handler;
         // unimplemented!();
         Ok(())
     }