use more cppu::BaseMutex

Change-Id: Iddd7438161ead93b27cf8e8058ca5b1eae3d8001
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127075
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 3 insertions, 8 deletions

diff --git a/sfx2/inc/preventduplicateinteraction.hxx b/sfx2/inc/preventduplicateinteraction.hxx
index b3259aa4ed80..f5a92ca7dd36 100644
--- a/sfx2/inc/preventduplicateinteraction.hxx
+++ b/sfx2/inc/preventduplicateinteraction.hxx
@@ -151,15 +151,10 @@ public:
                 On the other side there exists some interactions, which allow a retry.
                 So this helper allow to set a list of interactions combined with a retry value.
  */
-struct ThreadHelpBase2
-{
-    public:
-        mutable ::osl::Mutex m_aLock;
-};
-
-class PreventDuplicateInteraction final : private ThreadHelpBase2
-                                  , public ::cppu::WeakImplHelper<css::lang::XInitialization, css::task::XInteractionHandler2>
+class PreventDuplicateInteraction final :
+                                  public ::cppu::WeakImplHelper<css::lang::XInitialization, css::task::XInteractionHandler2>
 {
+    mutable ::osl::Mutex m_aLock;
 
     // structs, types etc.
     public: