EXC_BAD_ACCESS error on PieChart

[narek-sv]

• I've read, understood, and done my best to follow the *CONTRIBUTING guidelines.

What did you do?

    let dataEntries = [
        PieChartDataEntry(value: 10, label: "AAA"),
        PieChartDataEntry(value: 20, label: "BBB"),
        PieChartDataEntry(value: 70, label: "CCC"),
    ]
    
    let dataSet = PieChartDataSet(dataEntries)
    dataSet.highlightEnabled = false
    dataSet.valueFont = UIFont.systemFont(ofSize: 16, weight: .bold)
    dataSet.entryLabelFont = UIFont.systemFont(ofSize: 14, weight: .medium)

What happened instead?

Thread 1: EXC_BAD_ACCESS (code=1, address=0x40) error on line
-> dataSet.entryLabelFont = UIFont.systemFont(ofSize: 14, weight: .medium)

Charts Environment

**Charts version/Branch/Commit Number: (version 3.2.2 branch 'master'), (branch 'swift-5')
**Xcode version: 10.2
**Swift version: 5.0
**Platform(s) running Charts: (iPhone 6 iOS 12.2), (iPhone 6+ iOS 12.1.2)
**macOS version running Xcode: 10.14.3, 10.14.4