Added null checks for DotNode and DotEdge

vfrz / DotNetGraph

Create GraphViz DOT graph with .NET / C#

MIT License

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Added null checks for DotNode and DotEdge #28

Closed Droppers closed 4 years ago

Droppers commented 4 years ago

I just remembered being confused about a null reference exception at first in DotCompiler. I have removed the empty constructor for DotNode, and added proper null / empty checks.