!9879 [lite]fix reshape infershape with input is null

From: @xu_anyue
Reviewed-by: @hangangqiang,@zhanghaibo5
Signed-off-by: @hangangqiang

mindspore/lite/src/ops/reshape.cc

@@ -179,8 +179,8 @@ int Reshape::InferShape(std::vector<Tensor *> inputs_, std::vector<Tensor *> out
   std::vector<int> out_shape;
   if (inputs_.size() == kDoubleNum) {
     auto shape_tensor = inputs_.at(1);
-    if (input->ElementsNum() == 1) {
-      if (shape_tensor->shape().empty()) {
+    if (shape_tensor->IsConst()) {
+      if (shape_tensor->data_c() == nullptr || (shape_tensor->shape().size() == 1 && shape_tensor->shape()[0] == 0)) {
         MS_LOG(DEBUG) << "reshape to a scalar.";
         output->set_shape(out_shape);
         return RET_OK;

mindspore/lite/tools/anf_exporter/anf_exporter.cc

@@ -390,7 +390,7 @@ int AnfExporter::ConvertInputParameter(const std::shared_ptr<AnfNode> &input_ano
                        [](const int64_t &value) { return static_cast<int32_t>(value); });
   paramTensor->dims = dims;
   auto paramValue = std::dynamic_pointer_cast<ParamValueLite>(paramNode->default_param());
-  if (paramValue != nullptr) {
+  if (paramValue != nullptr && paramValue->tensor_size() != 0) {
     paramTensor->data.resize(paramValue->tensor_size());
     paramTensor->format = schema::Format(paramValue->format());
     if (EOK != memcpy_s(paramTensor->data.data(), paramTensor->data.size(), paramValue->tensor_addr(),