Little corrections to uplink/downlink filter
diff --git a/grc/grgsm_uplink_downlink_filter.xml b/grc/grgsm_uplink_downlink_filter.xml
index d868752..65d852d 100644
--- a/grc/grgsm_uplink_downlink_filter.xml
+++ b/grc/grgsm_uplink_downlink_filter.xml
@@ -4,7 +4,7 @@
   <key>grgsm_uplink_downlink_filter</key>
   <category>GSM</category>
   <import>import grgsm</import>
-  <make>grgsm.uplink_downlink_filter($direction)</make>
+  <make>grgsm.uplink_downlink_filter()</make>
   <sink>
     <name>in</name>
     <type>message</type>
diff --git a/lib/uplink_downlink_filter_impl.cc b/lib/uplink_downlink_filter_impl.cc
index b326fff..5dd41f2 100644
--- a/lib/uplink_downlink_filter_impl.cc
+++ b/lib/uplink_downlink_filter_impl.cc
@@ -49,7 +49,6 @@
         message_port_register_in(pmt::mp("in"));
         message_port_register_out(pmt::mp("uplink"));
         message_port_register_out(pmt::mp("downlink"));
-        
         set_msg_handler(pmt::mp("in"), boost::bind(&uplink_downlink_filter_impl::process_msg, this, _1));
     }
 
@@ -63,7 +62,6 @@
         } else {
             message_port_pub(pmt::mp("downlink"), msg);
         }
-          
     }
 
     /*