Fix mAhDrawn - one too many / 1000.

Without this commit the mAhDrawn was always 0, now at ~10A draw it ticks
up.

This needs to be verified, but seems to match behaviour of 1.9.x.

Fixes #1353

src/main/mw.c

@@ -259,7 +259,7 @@ void annexCode(void)
 
         if (ibatTimeSinceLastServiced >= IBATINTERVAL) {
             ibatLastServiced = currentTime;
-            updateCurrentMeter((ibatTimeSinceLastServiced / 1000), &masterConfig.rxConfig, masterConfig.flight3DConfig.deadband3d_throttle);
+            updateCurrentMeter(ibatTimeSinceLastServiced, &masterConfig.rxConfig, masterConfig.flight3DConfig.deadband3d_throttle);
         }
     }