Fix coding style based on Tizen SE C++ Coding Rule
Tizen SE C++ Coding Rule:
https://code.sec.samsung.net/confluence/pages/viewpage.action?pageId=
160925159
Change-Id: I1ae54a3676dc9cc0e06d4322eb612ceb07d7626c
Signed-off-by: Inki Dae <inki.dae@samsung.com>