macosx: return a value in a non-void method

modules/gui/macosx/misc.m

@@ -255,7 +255,7 @@ static NSMutableArray *blackoutWindows = NULL;
     }
 
     invoc = [NSInvocation invocationWithMethodSignature:[super methodSignatureForSelector:@selector(close)]];
-    [invoc setTarget: (id)super];
+    [invoc setTarget: self];
 
     if (![self isVisible] || [self alphaValue] == 0.0)
     {
@@ -269,7 +269,7 @@ static NSMutableArray *blackoutWindows = NULL;
 - (void)orderOut: (id)sender animate: (BOOL)animate
 {
     NSInvocation *invoc = [NSInvocation invocationWithMethodSignature:[super methodSignatureForSelector:@selector(orderOut:)]];
-    [invoc setTarget: (id)super];
+    [invoc setTarget: self];
     [invoc setArgument: sender atIndex: 0];
     [self orderOut: sender animate: animate callback: invoc];
 }

modules/gui/macosx/playlist.m

@@ -706,7 +706,7 @@
                     inNode: (playlist_item_t *)p_node
                     checkItemExistence:(BOOL)b_check
 {
-    [self isItem:p_item inNode:p_node checkItemExistence:b_check locked:NO];
+    return [self isItem:p_item inNode:p_node checkItemExistence:b_check locked:NO];
 }
 
 /* This method is useful for instance to remove the selected children of an