apps/examples/testcase/le_tc/kernel: Resolve warnings
apps/examples/testcase/le_tc/kernel: Resolve warnings

Resolve warnings in tc_task.c

Signed-off-by: Vidisha Thapa <3d8bcdb46ae40344d12a5a0255e34cf386c7657a@samsung.com>

sunghan-chang/TizenRT,sunghan-chang/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,jeongchanKim/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,jsdosa/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,an4967/TizenRT,jeongarmy/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,junmin-kim/TizenRT,junmin-kim/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,Samsung/TizenRT,Samsung/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,an4967/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,pillip8282/TizenRT,pillip8282/TizenRT,junmin-kim/TizenRT,jeongarmy/TizenRT,jeongarmy/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,jeongchanKim/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT