make matrices of same shape so that we can add them

theano/scan_module/tests/test_scan.py

@@ -2898,10 +2898,10 @@ class T_Scan(unittest.TestCase):
         # and the numeric differentiation becomes unstable.
         # To fix this issue I unsure we are sampling numbers larger in
         # absolute value than 1
-        v_x = numpy.array(rng.uniform(size=(5, 2, 3), low=1., high=3.),
+        v_x = numpy.array(rng.uniform(size=(5, 2, 2), low=1., high=3.),
                            dtype=theano.config.floatX)
         # making some entries to be negative
-        pos = rng.uniform(size=(5, 2, 3), low=0., high=1) < .5
+        pos = rng.uniform(size=(5, 2, 2), low=0., high=1) < .5
         v_x[pos] = -1 * v_x[pos]
         v_w = numpy.array(rng.uniform(size=(2, 2), low=1., high=3.),
                           dtype=theano.config.floatX)