More goto improvements.

jedi/api/classes.py

@@ -590,16 +590,18 @@ class Definition(use_metaclass(CachedMetaClass, BaseDefinition)):
         elif isinstance(d, pr.Module):
             # only show module name
             d = 'module %s' % self.module_name
-        else:
+        elif isinstance(d, pr.Param):
+            d = d.get_code()
+        else:  # ExprStmt
             first_leaf = d.first_leaf()
             # Remove the prefix, because that's not what we want for get_code
             # here.
             old, first_leaf.prefix = first_leaf.prefix, ''
             try:
-                d = d.get_code().replace('\n', '').replace('\r', '')
+                d = d.get_code()
             finally:
                 first_leaf.prefix = old
-        return d
+        return d.replace('\n', '').replace('\r', '')
 
     @property
     def desc_with_module(self):