[NBug] Object reference not set to an instance of an object.

[mstv]

Current behaviour

NRE from Left Panel

Expected behaviour

no crash

Steps to reproduce

• hide local branches in the Left Panel (illustrating the need for Left Panel: Jump between tracked branches #9194)
• checkout ahead remote branch, i.e. pull
  -> attempt to ApplyStyle to LocalBranchNode

Error Details

System.NullReferenceException: Object reference not set to an instance of an object.
   at void GitUI.BranchTreePanel.RepoObjectsTree+BaseBranchNode.ApplyStyle() in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.Nodes.Branches.cs:line 67
   at void GitUI.BranchTreePanel.RepoObjectsTree+BaseBranchLeafNode.ApplyStyle() in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.Nodes.Branches.cs:line 172
   at void GitUI.BranchTreePanel.RepoObjectsTree+LocalBranchNode.ApplyStyle() in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.Nodes.Branches.cs:line 202
   at void GitUI.BranchTreePanel.RepoObjectsTree+BaseBranchLeafNode.set_IsMerged(bool value) in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.Nodes.Branches.cs:line 164
   at void GitUI.BranchTreePanel.RepoObjectsTree.SelectionChanged(IReadOnlyList<GitRevision> selectedRevisions)+(BaseBranchLeafNode node) => { } in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.cs:line 290
   at void System.Linq.LinqExtensions.ForEach<T>(IEnumerable<T> enumerable, Action<T> action) in D:/Build/gitextensions3_dev/GitExtUtils/Linq/LinqExtensions.cs:line 124
   at void GitUI.BranchTreePanel.RepoObjectsTree+<>c__DisplayClass45_0+<<SelectionChanged>b__0>d.MoveNext() in D:/Build/gitextensions3_dev/GitUI/BranchTreePanel/RepoObjectsTree.cs:line 290
   at void GitUI.ThreadHelper+<>c__DisplayClass13_0+<<FileAndForget>b__0>d.MoveNext() in D:/Build/gitextensions3_dev/GitExtUtils/GitUI/ThreadHelper.cs:line 100

Environment

• Git Extensions 0.0.0.0
• Build b430c3f
• Git 2.31.1.windows.1
• Microsoft Windows NT 10.0.19042.0
• .NET 5.0.6
• DPI 96dpi (no scaling)