fix goto_definition on lambda problem, fixes #274

jedi/parsing_representation.py

@@ -1059,6 +1059,8 @@ class Statement(Simple):
                 lambd, tok = parse_lambda(token_iterator)
                 if lambd is not None:
                     result.append(lambd)
+                else:
+                    continue
 
             is_literal = token_type in [tokenize.STRING, tokenize.NUMBER]
             if isinstance(tok, Name) or is_literal:

test/test_integration_keyword.py

@@ -40,3 +40,7 @@ def test_keyword():
     with common.ignored(jedi.NotFoundError):  # TODO shouldn't throw that.
         defs = Script("assert").goto_definitions()
         assert len(defs) == 1
+
+def test_lambda():
+    defs = Script('lambda x: x', column=0).goto_definitions()
+    assert [d.type for d in defs] == ['keyword']