tree 0cb65982f576f4fa31486e240d5f6a75a3439631
parent c14699f63e909ed6d8599e65503ee9c1e3a104d6
author Lei YU <mine260309@gmail.com> 1560149717 +0800
committer Lei YU <mine260309@gmail.com> 1560246573 +0800

message: Add get_error()

Add message::get_error() to get sd_bus_error from a message.

Tested: Verify the function is added, the build passes, and the user of
        sdbusplus is able to call message::get_error() to get the
        const sd_bus_error* pointer.

Change-Id: If4c413316ff7654448e9da19adcd3dab2c33675e
Signed-off-by: Lei YU <mine260309@gmail.com>