CalculateTotalInputSizes/CalculateTotalOutputSizes bug #4229
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Description: When profiling is enabled, these two functions are called to calculate the total size of the input and output tensors. The routines don't handle nodes with missing optional input or output nodes.
Motivation and Context
I hit a crash when attempting to run a model using python where profiling was enabled by default. The model had LSTM nodes with unused edges. This fix the crash.