[PATCH] python: fix get_property error when property doesn't exist

[David Bremner]

Vincent A <dev at indigo.re> writes:

> In Python bindings, Message.get_property fails with an AttributeError 
> when trying to fetch a property that doesn't exist.
> From d712832ba982085975c27b23bb502af82e638b39 Mon Sep 17 00:00:00 2001
> From: hydrargyrum <dev at indigo.re>
> Date: Sun, 6 Jan 2019 16:08:55 +0100
> Subject: [PATCH] python: fix get_property error when property doesn't exist
>

pushed, thanks.

BTW, if possible please use git send-email rather than attachements, as
it simplifies the review process. You can still add (non-commit message)
commentary after the --- by passing --annotate.

d