small fix from code review

theano/sandbox/gpuarray/nnet.py

@@ -352,7 +352,7 @@ class GpuCrossentropySoftmax1HotWithBiasDx(Op):
             %(fail)s;
         }
         if (PyGpuArray_DIMS(%(sm)s)[0] !=
-            PyGpuArray__DIMS(%(y_idx)s)[0])
+            PyGpuArray_DIMS(%(y_idx)s)[0])
         {
             PyErr_SetString(PyExc_ValueError,
                             "sm.shape[0] != y_idx.shape[0]");

theano/sandbox/gpuarray/tests/test_opt.py

@@ -7,7 +7,7 @@ from theano.tests.unittest_tools import SkipTest
 from theano.tensor.tests import test_basic
 
 import theano.sandbox.gpuarray
-from theano.sandbox.gpuarray import basic_ops
+from .. import basic_ops
 from ..type import GpuArrayType, gpuarray_shared_constructor
 from ..basic_ops import (GpuAlloc, GpuReshape, gpu_alloc,
                          gpu_from_host, host_from_gpu)