fix interpolate mkldnn op error (#36662)

paddle/fluid/operators/mkldnn/interpolate_mkldnn_op.cc

@@ -104,10 +104,12 @@ class InterpolateMKLDNNKernel : public framework::OpKernel<T> {
           scale.push_back(scale[0]);
         } else {  // v2
           std::vector<float> scale_attr = ctx.Attr<std::vector<float>>("scale");
+          if (scale_attr.size() > 0) {
             scale.resize(3, scale_attr[0]);
             std::copy(scale_attr.begin(), scale_attr.end(), scale.begin());
           }
         }
+      }
       if (scale[0] > 0.0f && scale[1] > 0.0f && scale[2] > 0.0f) {
         int j = 0;
         std::vector<int64_t> in_dhw_vec = framework::vectorize(in_dhw_dims);