Fix compilation of __get_value

Author: akukanov

include/oneapi/dpl/pstl/hetero/dpcpp/parallel_backend_sycl_utils.h

@@ -585,15 +585,15 @@ struct __result_storage
 
     // Note: this member function assumes a kernel has completed and the result can be transferred to host
     _T
-    __get_value(std::size_t __idx = 0) const
+    __get_value(std::size_t __idx = 0)
     {
         if (__kind == sycl::usm::alloc::host)
         {
             return *(__result_buf.get() + __idx);
         }
         else if (__kind == sycl::usm::alloc::device)
         {
-            sycl::queue __q = __result_buf.get_deleter().__q;
+            sycl::queue& __q = __result_buf.get_deleter().__q;
             // Avoid default constructor for _T. It is device copyable, therefore a copy construction
             // is equivalent to a bitwise copy and __space.__v is effectively constructed after memcpy.
             oneapi::dpl::__internal::__lazy_ctor_storage<_T> __space;
@@ -606,7 +606,7 @@ struct __result_storage
         }
         else
         {
-            return __sycl_buf->get_host_access(sycl::read_only)[__idx];
+            return __sycl_buf.get_host_access(sycl::read_only)[__idx];
         }
     }
 };