Fix EuRoC quaternion bug

Author: chutsu

proto/euroc.h

@@ -984,10 +984,10 @@ euroc_ground_truth_t *euroc_ground_truth_load(const char *data_dir) {
                         &p[0],
                         &p[1],
                         &p[2],
+                        &q[0],
                         &q[1],
                         &q[2],
                         &q[3],
-                        &q[0],
                         &v[0],
                         &v[1],
                         &v[2],