Merge pull request absinthe-graphql#1348 from martosaur/am/immediatel…

…y_exit_on_batch_timeout

Use exit/1 instead of Process.exit/2 on batch timeout

lib/absinthe/middleware/batch.ex

@@ -163,7 +163,7 @@ defmodule Absinthe.Middleware.Batch do
 
       _ ->
         emit_timeout_event(batch_fun, timeout)
-        Process.exit(self(), :timeout)
+        exit({:timeout, timeout, batch_fun})
     end
   end