fix eltwise op bug when input1.size()==input0.size() (#252)

mace/ops/eltwise.cc

@@ -865,7 +865,7 @@ class EltwiseOp : public Operation {
     const T *input1_ptr = input1->data<T>();
 
     if (data_format_ == NCHW && input1->dim_size() > 0 &&
-        input1->size() < input0->size()) {
+        input1->size() <= input0->size()) {
       MACE_RETURN_IF_ERROR(output->ResizeLike(input0));
       Tensor::MappingGuard output_guard(output);
       DstType *output_ptr = output->mutable_data<DstType>();