salusereventlist.hxx: Drop extra ';'

GCC with '-Wextra-semi' warned about

    vcl/inc/salusereventlist.hxx:75: warning: extra ';' after member function definition

Change-Id: Ifbf4632f9cf813aba1cb5a84ec9ac505208f2771
Reviewed-on: https://gerrit.libreoffice.org/74031
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
diff --git a/vcl/inc/salusereventlist.hxx b/vcl/inc/salusereventlist.hxx
index f2856c8..374c715 100644
--- a/vcl/inc/salusereventlist.hxx
+++ b/vcl/inc/salusereventlist.hxx
@@ -72,7 +72,7 @@ protected:

    virtual void ProcessEvent( SalUserEvent aEvent ) = 0;
    virtual void TriggerUserEventProcessing() = 0;
    virtual void TriggerAllUserEventsProcessed() {};
    virtual void TriggerAllUserEventsProcessed() {}

public:
    SalUserEventList();