[splittiming] Better variable name.

ArrowEffects had a minor change, but the intent isn't up yet.
It needs to be so that when you go from the editor to the chart
for playing in Song Timing, it doesn't use the Step Timing.

src/ArrowEffects.cpp

@@ -85,7 +85,7 @@ void ArrowEffects::Update()
 	FOREACH_PlayerNumber( pn )
 	{
 		const Style::ColumnInfo* pCols = pStyle->m_ColumnInfo[pn];
-		const SongPosition &position = (!GAMESTATE->m_bInStepEditor || GAMESTATE->m_bIsEditorStepTiming) 
+		const SongPosition &position = (GAMESTATE->m_bInStepEditor || GAMESTATE->m_bIsUsingStepTiming) 
 		? GAMESTATE->m_pPlayerState[pn]->m_Position : GAMESTATE->m_Position;
 
 		PerPlayerData &data = g_EffectData[pn];
@@ -264,7 +264,7 @@ float ArrowEffects::GetYOffset( const PlayerState* pPlayerState, int iCol, float
 	bIsPastPeakOut = true;
 
 	float fYOffset = 0;
-	const SongPosition &position = (!GAMESTATE->m_bInStepEditor || GAMESTATE->m_bIsEditorStepTiming)
+	const SongPosition &position = (!GAMESTATE->m_bInStepEditor || GAMESTATE->m_bIsUsingStepTiming)
 	? pPlayerState->m_Position : GAMESTATE->m_Position;
 	
 	float fSongBeat = position.m_fSongBeatVisible;