empty asserts should not lead to broken parsers

jedi/parsing.py

@@ -665,7 +665,7 @@ class Parser(object):
                 stmt, tok = self._parse_statement()
                 if stmt is not None:
                     stmt.parent = use_as_parent_scope
-                self._scope.asserts.append(stmt)
+                    self._scope.asserts.append(stmt)
             # default
             elif token_type in [tokenize.NAME, tokenize.STRING,
                                 tokenize.NUMBER] \

test/completion/invalid.py

@@ -141,10 +141,16 @@ a[0]
 int()).
 
 # -----------------
-# goto
+# keywords
 # -----------------
 
 #! []
 as
 
+def empty_assert():
+    x = 3
+    assert
+    #? int()
+    x
+
 import datetime as