tree bfe5bd3b42a956ab50d236fe5a30a63531f7004f
parent e0d6965e73f1f648ed02e483277f81a328ecb6df
author Vernon Mauery <vernon.mauery@linux.intel.com> 1536174159 -0700
committer Vernon Mauery <vernon.mauery@linux.intel.com> 1536177574 +0000

sdbusplus::asio: fix callback with void args specialization

Callbacks with no arguments failed to build due to an error in the
utility::get_first_arg template. It failed to provide a type member for
the void specialization. With this fix, it is possible to have a handler
that has no arguments.

Tested by: Added a new callback to the asio-example.cpp. Without the
           template change, this caused the build to fail as expected.
           After adding the template change, the build succeeds and the
           example runs as expected.

Change-Id: Ib09b58c76df8cba57dc093ab37a4c1b68ea11ad3
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>