[SYCL] Fix asynchronous exceptions handling

This fixes following problem:
If provided async_handler throws an exceptions from passed exception
list, this list won't be cleared and exceptions will be thrown again
from queue destructor.

Signed-off-by: Mariya Podchishchaeva <mariya.podchishchaeva@intel.com>

sycl/include/CL/sycl/detail/queue_impl.hpp

@@ -126,9 +126,10 @@ class queue_impl {
 
   void throw_asynchronous() {
     if (m_AsyncHandler && m_Exceptions.size()) {
-      m_AsyncHandler(m_Exceptions);
+      exception_list Exceptions;
+      std::swap(m_Exceptions, Exceptions);
+      m_AsyncHandler(Exceptions);
     }
-    m_Exceptions.Clear();
   }
 
   RT::PiQueue createQueue(QueueOrder Order) {