hlink: Return S_FALSE in GetTargetFrameName when returning NULL.

dlls/hlink/link.c

@@ -437,7 +437,15 @@ static HRESULT WINAPI IHlink_fnGetTargetFrameName(IHlink* iface,
     HlinkImpl  *This = impl_from_IHlink(iface);
 
     TRACE("(%p)->(%p)\n", This, ppwzTargetFrameName);
+
+    if(!This->TargetFrameName) {
+        *ppwzTargetFrameName = NULL;
+        return S_FALSE;
+    }
+
     *ppwzTargetFrameName = hlink_co_strdupW( This->TargetFrameName );
+    if(!*ppwzTargetFrameName)
+        return E_OUTOFMEMORY;
 
     return S_OK;
 }

dlls/mshtml/tests/htmldoc.c

@@ -745,7 +745,6 @@ static HRESULT WINAPI HlinkFrame_Navigate(IHlinkFrame *iface, DWORD grfHLNF, LPB
         DWORD site_data = 0xdeadbeef;
 
         hres = IHlink_GetTargetFrameName(pihlNavigate, &frame_name);
-        todo_wine
         ok(hres == S_FALSE, "GetTargetFrameName failed: %08x\n", hres);
         ok(frame_name == NULL, "frame_name = %p\n", frame_name);