Copter: fixed some build warnings

ArduCopter/GCS_Mavlink.pde

@@ -1105,7 +1105,8 @@ GCS_MAVLINK::send_text_P(gcs_severity severity, const prog_char_t *str)
 
 void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
 {
-    struct Location tell_command = {};                                  // command for telemetry
+    struct Location tell_command;
+    memset(&tell_command, 0, sizeof(tell_command));
 
     switch (msg->msgid) {
 

ArduCopter/Parameters.h

@@ -379,11 +379,12 @@ public:
     RC_Channel_aux          rc_6;
     RC_Channel_aux          rc_7;
     RC_Channel_aux          rc_8;
+#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
+    RC_Channel_aux          rc_9;
+#endif
     RC_Channel_aux          rc_10;
     RC_Channel_aux          rc_11;
-
 #if CONFIG_HAL_BOARD == HAL_BOARD_PX4
-    RC_Channel_aux          rc_9;
     RC_Channel_aux          rc_12;
 #endif