Fix typo.

Author: maleadt

lib/cublas/CUBLAS.jl

@@ -152,7 +152,7 @@ function xt_handle()
         finalizer(current_task()) do task
             push!(idle_xt_handles, cuda.context, new_handle) do
                 # TODO: which context do we need to destroy this on?
-                cublasXtDestroy(handle)
+                cublasXtDestroy(new_handle)
             end
         end