LD app core dump after the CFE_TBL_Manage() call

[ynielson]

When the app initialize the config table,
if the CFE_TBL_Manage() function return "CFE_TBL_INFO_UPDATED",
it try to store the "ConfigTblPtr->LD_OP_MODE" HkTlm.

This caused core dump because the ConfigTblPtr was yet NULL.
It should get the address by the function call, "CFE_TBL_GetAddress" in the next line.

• Test case : Test_LD_InitConfigTbl_TblManageUpdated()