Silence SON logs when not needed

libraries/chain/db_maint.cpp

@@ -660,6 +660,10 @@ void database::update_active_committee_members()
 
 void database::update_active_sons()
 { try {
+   if (head_block_time() < HARDFORK_SON_TIME) {
+      return;
+   }
+
    assert( _son_count_histogram_buffer.size() > 0 );
    share_type stake_target = (_total_voting_stake-_son_count_histogram_buffer[0]) / 2;
 
@@ -759,11 +763,7 @@ void database::update_active_sons()
       }
    }
 
-   if (son_sets_equal) {
-      ilog( "Active SONs set NOT CHANGED" );
-   } else {
-      ilog( "Active SONs set CHANGED" );
-
+   if (!son_sets_equal) {
       update_son_wallet(new_active_sons);
       update_son_statuses(cur_active_sons, new_active_sons);
    }

libraries/net/node.cpp

@@ -1339,7 +1339,7 @@ namespace graphene { namespace net { namespace detail {
       // reconnect with the rest of the network, or it might just futher isolate us.
       {
         // As usual, the first step is to walk through all our peers and figure out which
-        // peers need action (disconnecting, sending keepalives, etc), then we walk through 
+        // peers need action (disconnecting, sending keepalives, etc), then we walk through
         // those lists yielding at our leisure later.
         ASSERT_TASK_NOT_PREEMPTED();