Fix `NullPointerException` when autoboxing #460

Line Coverage: 0.00% (+0.00%), Branch Coverage: 0.00% (+0.00%)

Overall project (difference to reference job)
* Line Coverage: 15.44% (585/3790) - Delta: +3.11%
* Branch Coverage: 9.28% (115/1239) - Delta: +2.25%
* Complexity Density: 0.38 - Delta: +0.00
* Lines of Code: 3790 - Delta: +2
Modified files (difference to reference job)
* Line Coverage: 0.00% (0/67) - Delta: +0.00%
* Branch Coverage: 0.00% (0/38) - Delta: +0.00%
* Complexity Density: 0.34
* Lines of Code: 67
Modified code lines (difference to modified files)
* Line Coverage: 0.00% (0/4) - Delta: +0.00%
* Branch Coverage: 0.00% (0/4) - Delta: +0.00%
* Lines of Code: 4
Indirect changes
* Line Coverage: 100.00% (118/118)
* Branch Coverage: 100.00% (28/28)
* Lines of Code: 118

No active quality gates.

	Module Coverage	Package Coverage	File Coverage	Class Coverage	Method Coverage	Line Coverage	Branch Coverage	Instruction Coverage
🐾 Overall project	100.00% (1/1)	77.78% (7/9)	56.16% (41/73)	46.03% (58/126)	28.66% (233/813)	15.44% (585/3790)	9.28% (115/1239)	13.70% (2094/15288)
📈 Overall project (difference to reference job)	+0.00%	+0.00%	+0.00%	+1.59% ⬆️	+6.27% ⬆️	+3.11% ⬆️	+2.25% ⬆️	+2.70% ⬆️
🐾 Modified files	0.00% (0/1)	0.00% (0/1)	0.00% (0/1)	0.00% (0/1)	0.00% (0/4)	0.00% (0/67)	0.00% (0/38)	0.00% (0/274)
📈 Modified files (difference to reference job)	n/a	n/a	n/a	n/a	n/a	+0.00%	+0.00%	n/a
🐾 Modified code lines	0.00% (0/1)	0.00% (0/1)	0.00% (0/1)	n/a	n/a	0.00% (0/4)	0.00% (0/4)	n/a
📈 Modified code lines (difference to modified files)	n/a	n/a	n/a	n/a	n/a	+0.00%	+0.00%	n/a
🐾 Indirect changes	100.00% (1/1)	100.00% (3/3)	100.00% (18/18)	n/a	n/a	100.00% (118/118)	100.00% (28/28)	n/a