fix the mac build when compiling in 32-bit mode, which doesn't support the "modern runtime" for creating ivars

macosx/FileListNode.h

@@ -31,6 +31,13 @@
     NSMutableIndexSet * fIndexes;
     
     NSMutableArray * fChildren;
+    
+    NSString * fName;
+    NSString * fPath;
+    Torrent * fTorrent;
+    uint64_t fSize;
+    NSImage * fIcon;
+    BOOL fIsFolder;
 }
 
 @property (nonatomic, readonly) NSString * name;

macosx/FileListNode.m

@@ -32,6 +32,7 @@
 
 @implementation FileListNode
 
+#warning remove ivars in header when 64-bit only (or it compiles in 32-bit mode)
 @synthesize name = fName;
 @synthesize path = fPath;
 @synthesize torrent = fTorrent;

macosx/TrackerNode.h

@@ -30,6 +30,8 @@
 @interface TrackerNode : NSObject
 {
     tr_tracker_stat fStat;
+    
+    Torrent * fTorrent;
 }
 
 @property (nonatomic, readonly) Torrent * torrent;

macosx/TrackerNode.m

@@ -27,6 +27,7 @@
 
 @implementation TrackerNode
 
+#warning remove ivars in header when 64-bit only (or it compiles in 32-bit mode)
 @synthesize torrent = fTorrent;
 
 - (id) initWithTrackerStat: (tr_tracker_stat *) stat torrent: (Torrent *) torrent