Bug (?) in CandleStickChartRenderer when showing empty dataset among multiple datasets

[krahabb]

When adding multiple datasets to a candlestick chart if one of these is empty the renderer crashes looking for data into the empty dataset. I've patched my version with this check into 'CandleStickChartRenderer.swift' around line 48:

if (set.isVisible && (set.entryCount != 0))

substitutes
if (set.isVisible)

also (I haven't checked because I have labels disabled in my use case)

around line 200:

if (!dataSet.isDrawValuesEnabled || (dataSet.entryCount == 0))

substitutes
if (!dataSet.isDrawValuesEnabled)

I am using candlestick inside a combinedchart but I guess the bug appears by itself in the renderer even when the candlstickchart is used alone (not tested though)