Fix bug appearing with TRACE mode OFF

test/gtest_rotation.cpp

@@ -637,9 +637,8 @@ TEST(exp_q, small)
     {
         v               = u*scale;
         q               = exp_q(v);
-        Vector3s ratio  = q.vec().array() / v.array();
 
-        WOLF_TRACE("scale = ", scale, "; ratio = ", ratio.transpose());
+        WOLF_TRACE("scale = ", scale, "; ratio = ", (q.vec().array() / v.array()).transpose());
 
         scale          /= 10;
     }