Motion time periods were calculated incorrectly. Thanks to Jesse Crossen for pointing it out.

git-svn-id: svn+ssh://svn.code.sf.net/p/spacenav/code/trunk/spacenavd@116 ef983eb1-d774-4af8-acfd-baaf7b16a646

src/event.c

@@ -130,9 +130,9 @@ static void send_event(spnav_event *ev, struct client *c)
 
 static unsigned int msec_dif(struct timeval tv1, struct timeval tv2)
 {
-	unsigned int ds, du;
+	unsigned int ms1, ms2;
 
-	ds = tv2.tv_sec - tv1.tv_sec;
-	du = tv2.tv_usec - tv1.tv_usec;
-	return ds * 1000 + du / 1000;
+	ms1 = tv1.tv_sec * 1000 + tv1.tv_usec / 1000;
+	ms2 = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
+	return ms1 - ms2;
 }