GCS_Mavlink: constrain battery current to avoid wrap

libraries/GCS_MAVLink/GCS_Common.cpp

@@ -217,7 +217,7 @@ void GCS_MAVLINK::send_battery_status(const uint8_t instance) const
 
     float current, consumed_mah, consumed_wh;
     if (battery.current_amps(current, instance)) {
-         current *= 100;
+         current = constrain_float(current * 100,-INT16_MAX,INT16_MAX);
     } else {
         current = -1;
     }
@@ -2031,7 +2031,7 @@ void GCS_MAVLINK::send_battery2()
     if (battery.num_instances() > 1) {
         float current;
         if (battery.current_amps(current, 1)) {
-            current *= 100; // 10*mA
+            current = constrain_float(current * 100,-INT16_MAX,INT16_MAX); // 10*mA
         } else {
             current = -1;
         }
@@ -4167,7 +4167,7 @@ void GCS_MAVLINK::send_sys_status()
 
     if (battery.healthy() && battery.current_amps(battery_current)) {
         battery_remaining = battery.capacity_remaining_pct();
-        battery_current *= 100;
+        battery_current = constrain_float(battery_current * 100,-INT16_MAX,INT16_MAX);
     } else {
         battery_current = -1;
         battery_remaining = -1;