[lite] fix compute shape error in operator/conv_op.cc (#2490)

 fix ccompute shape error in ooperators/conv_op.h, test=develop

lite/operators/conv_op.cc

@@ -62,9 +62,9 @@ inline void UpdatePaddingAndDilation(std::vector<int>* paddings,
   if (padding_algorithm == "SAME") {
     for (size_t i = 0; i < strides.size(); ++i) {
       int out_size = (data_dims[i + 2] + strides[i] - 1) / strides[i];
-      int pad_sum =
-          std::max((out_size - 1) * strides[i] + ksize[i] - data_dims[i + 2],
-                   (int64_t)0);
+      int pad_sum = std::max(
+          (out_size - 1) * strides[i] + ksize[i + 2] - data_dims[i + 2],
+          (int64_t)0);
       int pad_0 = pad_sum / 2;
       int pad_1 = pad_sum - pad_0;
       // pad