Fixed bin destruction on Mac OS X.

darwin/tab.m

@@ -19,6 +19,7 @@ static void destroy(void *data)
 	while ([t->tabview numberOfTabViewItems] != 0)
 		[t->tabview removeTabViewItem:[t->tabview tabViewItemAtIndex:0]];
 	// then destroy all the bins, destroying children in the process
+	// the above loop serves the purpose of binSetParent()
 	[t->pages enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
 		NSValue *v = (NSValue *) obj;
 		uiContainer *p;
@@ -119,6 +120,7 @@ static void tabDeletePage(uiTab *tt, uintmax_t n)
 	binSetMainControl(p, NULL);
 
 	// remove the bin from the tab view
+	// this serves the purpose of binSetParent()
 	i = [t->tabview tabViewItemAtIndex:n];
 	[t->tabview removeTabViewItem:i];
 

darwin/window.m

@@ -59,8 +59,10 @@ static void windowDestroy(uiControl *c)
 	// first hide ourselves
 	[w->window orderOut:w->window];
 	// now destroy the bin
-	// the bin has no parent, so we can just call uiControlDestroy()
-	// we also don't have to worry about the NSWindow's reference to the content view; that'll be released too
+	// we need to remove the bin from its parent; this is equivalent to calling binSetParent()
+	// we do this by changing the content view to a dummy view
+	// the window will release its reference on the bin now, then it will release its reference on the dummy view when the window itself is finally released
+	[w->window setContentView:[[NSView alloc] initWithFrame:NSZeroRect]];
 	uiControlDestroy(uiControl(w->bin));
 	// now destroy the delegate
 	[w->window setDelegate:nil];