IOT-2204: Fix IPCA build warnings on Linux.

IOT-2204: Fix IPCA build warnings on Linux.

A couple of warnings didn't get fixed earlier.

resource/IPCA/src/ocfframework.cpp:237:17: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
resource/IPCA/src/ocfframework.cpp:255:17: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]

Change-Id: Id901213b83a45a0f6798d7f2b8c501339b7af71c
Signed-off-by: Soemin Tjong <stjong@microsoft.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/20367
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Dan Mihai <Daniel.Mihai@microsoft.com>