Merge branch 'fixSpeedCalc' into 'master'

init speed variable

See merge request CaroloCup/carolocupFirmware!34

src/controller.c

@@ -339,6 +339,7 @@ static void updateDriveParams(struct controller *ctrl, float throttle, uint32_t
 	{
 		int64_t tmp;
 		int count = 0;
+		speed = 0;
 		for (i = 0; i < 4; i++) {
 // TODO: creepy hack we just use sensors 2 and 3 because 0 and 1 deliver bad values
 			if ( i <= 1 ) {