Fix C++ lint (#2041)

Author: fmassa

torchvision/csrc/cpu/DeformConv_cpu.cpp

@@ -392,8 +392,8 @@ at::Tensor DeformConv2d_forward_cpu(
                           .addmm_(weight[g].flatten(1), columns[g])
                           .view_as(out_buf[b][g]);
     }
-    columns = columns.view(
-        {columns.size(0) * columns.size(1), columns.size(2)});
+    columns =
+      columns.view({columns.size(0) * columns.size(1), columns.size(2)});
   }
 
   out_buf = out_buf.view({batch_sz / n_parallel_imgs,
@@ -751,7 +751,7 @@ static std::tuple<at::Tensor, at::Tensor> deform_conv2d_backward_input_cpu(
                         weight.size(1),
                         weight.size(2),
                         weight.size(3)});
-    
+
   for (int elt = 0; elt < batch_sz / n_parallel_imgs; elt++) {
     // Separate into weight groups
     columns = columns.view(