update according to pull request review comments

src/drivers/linux_pwm_out/bbblue_pwm_rc.cpp

@@ -30,7 +30,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  *
  ****************************************************************************/
-#ifdef __DF_BBBLUE
+#ifdef __PX4_POSIX_BBBLUE
 
 #include <fcntl.h>
 #include <errno.h>
@@ -79,4 +79,4 @@ int BBBlueRcPWMOut::send_output_pwm(const uint16_t *pwm, int num_outputs)
 	return ret;
 }
 
-#endif  // __DF_BBBLUE
+#endif  // __PX4_POSIX_BBBLUE

src/drivers/linux_sbus/linux_sbus.cpp

@@ -42,8 +42,7 @@ int RcInput::init()
 	/**
 	 * initialize the data of each channel
 	 */
-	for (i = 0; i < input_rc_s::RC_INPUT_MAX_CHANNELS && i < 16; ++i) {
-		//_data.values defined as int[16] and RC_INPUT_MAX_CHANNELS (=18) > 16
+	for (i = 0; i < input_rc_s::RC_INPUT_MAX_CHANNELS; ++i) {
 		_data.values[i] = UINT16_MAX;
 	}