don't worry about dangling timers at fuzzer exit

Change-Id: I9e18257f7e6e0438c6ce2801c0c2f8885b060870
Reviewed-on: https://gerrit.libreoffice.org/45214Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/source/app/scheduler.cxx

@@ -23,6 +23,7 @@
 
 #include <svdata.hxx>
 #include <tools/time.hxx>
+#include <unotools/configmgr.hxx>
 #include <vcl/scheduler.hxx>
 #include <vcl/idle.hxx>
 #include <saltimer.hxx>
@@ -575,7 +576,7 @@ Task::~Task() COVERITY_NOEXCEPT_FALSE
             mpSchedulerData->mpTask = nullptr;
     }
     else
-        assert( nullptr == mpSchedulerData );
+        assert(nullptr == mpSchedulerData || utl::ConfigManager::IsFuzzing());
 }
 
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