attempt fix of hang on base close, due to solarmutex deadlock on join

framework/inc/dispatch/closedispatcher.hxx

@@ -206,6 +206,7 @@ class CloseDispatcher : public css::lang::XTypeProvider
                     during they call us ...
         */
         DECL_LINK( impl_asyncCallback, void* );
+        void doClose();
 
         //---------------------------------------
         /** @short  prepare m_xCloseFrame so it should be closeable without problems.

framework/source/dispatch/closedispatcher.cxx

@@ -267,6 +267,13 @@ void SAL_CALL CloseDispatcher::dispatchWithNotification(const css::util::URL&
                   or shutdown the whole application.
 */
 IMPL_LINK_NOARG(CloseDispatcher, impl_asyncCallback)
+{
+    SolarMutexReleaser aReleaser;
+    doClose();
+    return 0;
+}
+
+void CloseDispatcher::doClose()
 {
     try
     {
@@ -296,7 +303,7 @@ IMPL_LINK_NOARG(CloseDispatcher, impl_asyncCallback)
     // frame already dead ?!
     // Nothing to do !
     if (! xCloseFrame.is())
-        return 0;
+        return;
 
     sal_Bool bCloseFrame           = sal_False;
     sal_Bool bEstablishBackingMode = sal_False;
@@ -452,7 +459,7 @@ IMPL_LINK_NOARG(CloseDispatcher, impl_asyncCallback)
     {
     }
 
-    return 0;
+    return;
 }
 
 //-----------------------------------------------