New blocks (msg to tag and controlled resampler) related stuff
diff --git a/grc/misc_utils/gsm_controlled_rotator_cc.xml b/grc/misc_utils/gsm_controlled_rotator_cc.xml
index 2d360cf..e280de9 100644
--- a/grc/misc_utils/gsm_controlled_rotator_cc.xml
+++ b/grc/misc_utils/gsm_controlled_rotator_cc.xml
@@ -27,6 +27,7 @@
   <sink>
     <name>phase_inc</name>
     <type>float</type>
+    <optional>1</optional>
   </sink>
   
   <source>