Fix buffer overflow issue detected by static analysis tool

Fix buffer overflow issue detected by static analysis tool

Variable (2) was passed to function 'close_option_window' at option.cpp:1049 by calling function 'close_option_window' at option.cpp:1068, where it is used to calculate index for buffer of size 2. This may lead to buffer overflow. Index assigned value at option.cpp:1068.
Variable (2) was passed to function 'close_option_window' at option.cpp:1049 by calling function 'close_option_window' at option.cpp:1515, where it is used to calculate index for buffer of size 2. This may lead to buffer overflow. Index assigned value at option.cpp:1515.

Change-Id: I40ceeaca6ba70a6e1fe6c739e5c3b2830402bb67
Signed-off-by: Jihoon Kim <jihoon48.kim@samsung.com>