GitLab

Declare void functions as strict prototype

If built along -Wstrict-prototypes it will raise and error,
this is the case on TizenRT.

More patches to come to enable this flag by default.

Bug: https://jira.iotivity.org/browse/IOT-2539
Change-Id: I71c37805b5fb60b4d8e1c78845194979fb18f9af
Origin: https://gerrit.iotivity.org/gerrit/#/c/23969/Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>