Trailing comma in key-value list is legal

[JanX2]

The trailing comma in a key-value list for initializing a dictionary in modern ObjC is legal:

NSDictionary *undoRootDict = @{
                               UndoFileVersionKey : @(kUndoFileCurrentVersionNumber),
                               UndoFileUsedSymbolicLinksKey : @(WantSymbolicLink),
                               UndoFileProcessedPairsKey : processedPairs,
                               };

iSwift only allows this construct when the trailing comma is deleted:

NSDictionary *undoRootDict = @{
                               UndoFileVersionKey : @(kUndoFileCurrentVersionNumber),
                               UndoFileUsedSymbolicLinksKey : @(WantSymbolicLink),
                               UndoFileProcessedPairsKey : processedPairs // <- here!
                               };

[drkameleon]

Issue fixed as of the upcoming 2.3.