Combine consecutive mutually exclusive status checks into an if/else

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
DS_AppInitialize contains consecutive, mutually exclusive status checks.

Code snips

DS/fsw/src/ds_app.c

Lines 202 to 211 in 04c0154

	if (Result != CFE_SUCCESS)
	{
	CFE_EVS_SendEvent(DS_INIT_ERR_EID, CFE_EVS_EventType_ERROR, "Unable to register for EVS services, err = 0x%08X",
	(unsigned int)Result);
	}
	/*
	** Create application Software Bus message pipe...
	*/
	if (Result == CFE_SUCCESS)

Expected behavior
Combine into an if/else - no need to do 2 evaluations.

Reporter Info
Avi Weiss @thnkslprpt