onnxruntime

906ae77e - [TensorRT EP] Add null_ptr check to avoid crash when running session which was failed to generate trt_engine previously (#21621)

[TensorRT EP] Add null_ptr check to avoid crash when running session which was failed to generate trt_engine previously (#21621) ### Description <!-- Describe your changes. --> Add null_ptr check to avoid crash when running session which was failed to generate trt_engine previously ### Motivation and Context <!-- - Why is this change required? What problem does it solve? - If it fixes an open issue, please link to the issue here. --> Reported and verified by https://github.com/microsoft/onnxruntime/issues/21567