Fixed template syntax to prevent ambiguity with stream operators

Fixed template syntax to prevent ambiguity with stream operators

This is a minor change but was noticed when trying to build with clang

This message appeared while building using tizen-sdk 2.4.0 Rev4
with imported libs (built with gbs from Tizen:2.4:Mobile repo)

Change-Id: Ib573d5ea9b23b29d6114d1f072210c370859fdec
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/6149
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Habib Virji <habib.virji@samsung.com>