convert OSL_ENSURE to assert in AccessibleEventNotifier

and fix the places that trigger it

Change-Id: I97a04cff25ab5aa1d42c79a971d15ba742bf384e
Reviewed-on: https://gerrit.libreoffice.org/31760Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

comphelper/source/misc/accessiblecontexthelper.cxx

@@ -151,7 +151,7 @@ namespace comphelper
         if ( !isAlive() )
             return;
 
-        if ( _rxListener.is() )
+        if ( _rxListener.is() && m_pImpl->getClientId() )
         {
             sal_Int32 nListenerCount = AccessibleEventNotifier::removeEventListener( m_pImpl->getClientId( ), _rxListener );
             if ( !nListenerCount )

comphelper/source/misc/accessibleeventnotifier.cxx

@@ -130,7 +130,7 @@ namespace
         // look up this client
         ClientMap &rClients = Clients::get();
         rPos = rClients.find( nClient );
-        OSL_ENSURE( rClients.end() != rPos,
+        assert( rClients.end() != rPos &&
             "AccessibleEventNotifier::implLookupClient: invalid client id "
             "(did you register your client?)!" );
 

svtools/source/control/accessibleruler.cxx

@@ -260,7 +260,7 @@ void SAL_CALL SvtRulerAccessible::addAccessibleEventListener( const uno::Referen
 void SAL_CALL SvtRulerAccessible::removeAccessibleEventListener( const uno::Reference< XAccessibleEventListener >& xListener )
     throw( RuntimeException, std::exception )
 {
-    if (xListener.is())
+    if (xListener.is() && mnClientId)
     {
         ::osl::MutexGuard   aGuard( m_aMutex );
 
@@ -332,23 +332,16 @@ void SAL_CALL SvtRulerAccessible::disposing()
 {
     if( !rBHelper.bDisposed )
     {
-        {
-            ::osl::MutexGuard   aGuard( m_aMutex );
-            mpRepr = nullptr;      // object dies with representation
-
-        }
+        ::osl::MutexGuard   aGuard( m_aMutex );
+        mpRepr = nullptr;      // object dies with representation
 
+        // Send a disposing to all listeners.
+        if ( mnClientId )
         {
-            ::osl::MutexGuard   aGuard( m_aMutex );
-
-            // Send a disposing to all listeners.
-            if ( mnClientId )
-            {
-                comphelper::AccessibleEventNotifier::revokeClientNotifyDisposing( mnClientId, *this );
-                mnClientId =  0;
-            }
-            mxParent.clear();
+            comphelper::AccessibleEventNotifier::revokeClientNotifyDisposing( mnClientId, *this );
+            mnClientId =  0;
         }
+        mxParent.clear();
     }
 }
 

sw/source/core/access/acccontext.cxx

@@ -730,7 +730,7 @@ void SAL_CALL SwAccessibleContext::removeAccessibleEventListener(
             const uno::Reference< XAccessibleEventListener >& xListener )
         throw (uno::RuntimeException, std::exception)
 {
-    if (xListener.is())
+    if (xListener.is() && m_nClientId)
     {
         SolarMutexGuard aGuard;
         sal_Int32 nListenerCount = comphelper::AccessibleEventNotifier::removeEventListener( m_nClientId, xListener );