ArduCopter: Bug fix, int8t should be uint16t.

ArduCopter/control_poshold.pde

@@ -85,7 +85,7 @@ static struct {
     Vector2f wind_comp_ef;                      // wind compensation in earth frame, filtered lean angles from position controller
     int16_t wind_comp_roll;                     // roll angle to compensate for wind
     int16_t wind_comp_pitch;                    // pitch angle to compensate for wind
-    int8_t  wind_comp_start_timer;              // counter to delay start of wind compensation for a short time after loiter is engaged
+    uint16_t wind_comp_start_timer;             // counter to delay start of wind compensation for a short time after loiter is engaged
     int8_t  wind_comp_timer;                    // counter to reduce wind comp roll/pitch lean angle calcs to 10hz
 
     // final output