Make the default wait timeout infinity (continued)

This the continuation of https://github.com/apache/couchdb-erlfdb/pull/22. There,
we updated only one `after` clause and forgot the other. The reasoning is the
same as before -- make erlfdb behave consistent with other FDB clients which
do not have top level client-side timeouts for futures.
diff --git a/src/erlfdb.erl b/src/erlfdb.erl
index 8353acd..b0e0714 100644
--- a/src/erlfdb.erl
+++ b/src/erlfdb.erl
@@ -253,7 +253,7 @@
             flush_future_message(Future),
             Result;
         false ->
-            Timeout = erlfdb_util:get(Options, timeout, 5000),
+            Timeout = erlfdb_util:get(Options, timeout, infinity),
             {erlfdb_future, MsgRef, _Res} = Future,
             receive
                 {MsgRef, ready} -> get(Future)