[sailfishos][embedlite] Avoid dropping freeze/thaw requests. Contribu…

…tes to JB#51747

Getting the nsPIDOMWindowInner from its nsPIDOMWindowOuter previously
involved performing a QueryInterface. This is no longer the case
(GetCurrentInnerWindow() is used instead) which was causing the Freeze()
and Thaw() requests to exit early (when a null interface was returned).

This change fixes this.

embedding/embedlite/embedshared/EmbedLiteViewBaseChild.cpp

@@ -665,8 +665,7 @@ mozilla::ipc::IPCResult EmbedLiteViewBaseChild::RecvSuspendTimeouts()
 {
   NS_ENSURE_TRUE(mDOMWindow, IPC_OK());
 
-  nsresult rv;
-  nsCOMPtr<nsPIDOMWindowInner> pwindow(do_QueryInterface(mDOMWindow, &rv));
+  nsCOMPtr<nsPIDOMWindowInner> pwindow(mDOMWindow->GetCurrentInnerWindow());
   if (pwindow && !pwindow->IsFrozen()) {
     pwindow->Freeze();
   }
@@ -678,8 +677,8 @@ mozilla::ipc::IPCResult EmbedLiteViewBaseChild::RecvResumeTimeouts()
 {
   NS_ENSURE_TRUE(mDOMWindow, IPC_OK());
 
-  nsresult rv;
-  nsCOMPtr<nsPIDOMWindowInner> pwindow(do_QueryInterface(mDOMWindow, &rv));
+  nsCOMPtr<nsPIDOMWindowInner> pwindow(mDOMWindow->GetCurrentInnerWindow());
+
   if (pwindow && pwindow->IsFrozen()) {
     pwindow->Thaw();
   }