bug 210713: [gtk2] leaks in nsWindow and nsAppShell.

r+sr=blizzard.

widget/src/gtk2/nsAppShell.cpp

@@ -96,6 +96,19 @@ nsAppShell::~nsAppShell(void)
 {
 }
 
+/* static */ void
+nsAppShell::ReleaseGlobals()
+{
+  if (sQueueHashTable) {
+    PL_HashTableDestroy(sQueueHashTable);
+    sQueueHashTable = nsnull;
+  }
+  if (sCountHashTable) {
+    PL_HashTableDestroy(sCountHashTable);
+    sCountHashTable = nsnull;
+  }
+}
+
 NS_IMPL_ISUPPORTS1(nsAppShell, nsIAppShell)
 
 NS_IMETHODIMP

widget/src/gtk2/nsAppShell.h

@@ -49,6 +49,8 @@ public:
     nsAppShell();
     virtual ~nsAppShell();
 
+    static void ReleaseGlobals();
+
     NS_DECL_ISUPPORTS
     NS_DECL_NSIAPPSHELL
 

widget/src/gtk2/nsWidgetFactory.cpp

@@ -119,6 +119,8 @@ static const nsModuleComponentInfo components[] =
 PR_STATIC_CALLBACK(void)
 nsWidgetGtk2ModuleDtor(nsIModule *aSelf)
 {
+  nsWindow::ReleaseGlobals();
+  nsAppShell::ReleaseGlobals();
 }
 
 NS_IMPL_NSGETMODULE_WITH_DTOR(nsWidgetGtk2Module,

widget/src/gtk2/nsWindow.cpp

@@ -218,6 +218,8 @@ static GtkIMContext *IM_get_input_context(MozDrawingarea *aArea);
 // cursor cache
 GdkCursor *gCursorCache[eCursorCount];
 
+#define ARRAY_LENGTH(a) (sizeof(a)/sizeof(a[0]))
+
 nsWindow::nsWindow()
 {
     mContainer           = nsnull;
@@ -273,6 +275,17 @@ nsWindow::~nsWindow()
     Destroy();
 }
 
+/* static */ void
+nsWindow::ReleaseGlobals()
+{
+  for (PRUint32 i = 0; i < ARRAY_LENGTH(gCursorCache); ++i) {
+    if (gCursorCache[i]) {
+      gdk_cursor_unref(gCursorCache[i]);
+      gCursorCache[i] = nsnull;
+    }
+  }
+}
+
 NS_IMPL_ISUPPORTS_INHERITED1(nsWindow, nsCommonWidget,
                              nsISupportsWeakReference)
 

widget/src/gtk2/nsWindow.h

@@ -67,6 +67,8 @@ public:
     nsWindow();
     virtual ~nsWindow();
 
+    static void ReleaseGlobals();
+
     NS_DECL_ISUPPORTS_INHERITED
 
     // nsIWidget