macosx: Remove incorrect whitespaces in audio group data source

Signed-off-by: Claudio Cambra <developer@claudiocambra.com>

modules/gui/macosx/library/audio-library/VLCLibraryAudioGroupDataSource.m

@@ -422,14 +422,14 @@ viewForSupplementaryElementOfKind:(NSCollectionViewSupplementaryElementKind)kind
 - (NSArray<VLCLibraryRepresentedItem *> *)representedItemsAtIndexPaths:(NSSet<NSIndexPath *> *const)indexPaths
                                                      forCollectionView:(NSCollectionView *)collectionView
 {
-    NSMutableArray<VLCLibraryRepresentedItem *> * const representedItems = 
+    NSMutableArray<VLCLibraryRepresentedItem *> * const representedItems =
         [NSMutableArray arrayWithCapacity:indexPaths.count];
-    
+
     for (NSIndexPath * const indexPath in indexPaths) {
-        const id<VLCMediaLibraryItemProtocol> libraryItem = 
+        const id<VLCMediaLibraryItemProtocol> libraryItem =
             [self libraryItemAtIndexPath:indexPath forCollectionView:collectionView];
-        VLCLibraryRepresentedItem * const representedItem = 
-            [[VLCLibraryRepresentedItem alloc] initWithItem:libraryItem 
+        VLCLibraryRepresentedItem * const representedItem =
+            [[VLCLibraryRepresentedItem alloc] initWithItem:libraryItem
                                                  parentType:self.currentParentType];
         [representedItems addObject:representedItem];
     }