Fix "attempt to destroy map with items inside" when menuManager is deallocated

Fixes #58. The map needs to have its contents properly freed which requires releasing the properly retaining the NSMenuItem object.

darwin/main.m

@@ -129,7 +129,6 @@ void uiUninit(void)
 {
 	@autoreleasepool {
 
-	uninitMenus();
 	[appDelegate() release];
 	[realNSApp() setDelegate:nil];
 	[realNSApp() release];

darwin/map.m

@@ -41,3 +41,19 @@ void mapDelete(struct mapTable *m, void *key)
 {
 	NSMapRemove(m->m, key);
 }
+
+void mapWalk(struct mapTable *m, void (*f)(void *key, void *value))
+{
+	NSMapEnumerator e = NSEnumerateMapTable(m->m);
+	void *k = NULL;
+	void *v = NULL;
+	while (NSNextMapEnumeratorPair(&e, &k, &v)) {
+		f(k, v);
+	}
+	NSEndMapTableEnumeration(&e);
+}
+
+void mapReset(struct mapTable *m)
+{
+	NSResetMapTable(m->m);
+}

darwin/menu.m

@@ -27,6 +27,14 @@ enum {
 	typeSeparator,
 };
 
+static void mapItemReleaser(void *key, void *value)
+{
+	uiMenuItem *item;
+ 
+	item = (uiMenuItem *)value;
+	[item->item release];
+}
+
 @implementation menuManager
 
 - (id)init
@@ -43,6 +51,9 @@ enum {
 
 - (void)dealloc
 {
+	uninitMenus();
+	mapWalk(self->items, mapItemReleaser);
+	mapReset(self->items);
 	mapDestroy(self->items);
 	[super dealloc];
 }
@@ -234,16 +245,16 @@ static uiMenuItem *newItem(uiMenu *m, int type, const char *name)
 	item->type = type;
 	switch (item->type) {
 	case typeQuit:
-		item->item = appDelegate().menuManager.quitItem;
+		item->item = [appDelegate().menuManager.quitItem retain];
 		break;
 	case typePreferences:
-		item->item = appDelegate().menuManager.preferencesItem;
+		item->item = [appDelegate().menuManager.preferencesItem retain];
 		break;
 	case typeAbout:
-		item->item = appDelegate().menuManager.aboutItem;
+		item->item = [appDelegate().menuManager.aboutItem retain];
 		break;
 	case typeSeparator:
-		item->item = [NSMenuItem separatorItem];
+		item->item = [[NSMenuItem separatorItem] retain];
 		[m->menu addItem:item->item];
 		break;
 	default:
@@ -335,7 +346,6 @@ void uninitMenus(void)
 {
 	if (menus == NULL)
 		return;
-	// don't worry about the actual NSMenus and NSMenuItems; they'll be freed when we clean up the NSApplication
 	[menus enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
 		NSValue *v;
 		uiMenu *m;

darwin/uipriv_darwin.h

@@ -89,6 +89,8 @@ extern void mapDestroy(struct mapTable *m);
 extern void *mapGet(struct mapTable *m, void *key);
 extern void mapSet(struct mapTable *m, void *key, void *value);
 extern void mapDelete(struct mapTable *m, void *key);
+extern void mapWalk(struct mapTable *m, void (*f)(void *key, void *value));
+extern void mapReset(struct mapTable *m);
 
 // area.m
 extern int sendAreaEvents(NSEvent *);