fix(csharp): priority queue comparer initialization · krahets/hello-algo@a8797d8

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/setup-dotnet@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Build: codes/csharp/chapter_tree/avl_tree.cs#L38

Dereference of a possibly null reference.

Build: codes/csharp/chapter_tree/avl_tree.cs#L39

Dereference of a possibly null reference.

Build: codes/csharp/chapter_tree/avl_tree.cs#L52

Dereference of a possibly null reference.

Build: codes/csharp/chapter_tree/avl_tree.cs#L53

Dereference of a possibly null reference.

Build: codes/csharp/chapter_computational_complexity/space_complexity.cs#L25

The variable 'c' is assigned but its value is never used

Build: codes/csharp/chapter_computational_complexity/space_complexity.cs#L19

The variable 'a' is assigned but its value is never used

Build: codes/csharp/chapter_computational_complexity/space_complexity.cs#L20

The variable 'b' is assigned but its value is never used

Build: codes/csharp/chapter_tree/avl_tree.cs#L38

Dereference of a possibly null reference.

Build: codes/csharp/chapter_tree/avl_tree.cs#L39

Dereference of a possibly null reference.

Build: codes/csharp/chapter_tree/avl_tree.cs#L52

Dereference of a possibly null reference.

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