message: Fix for spectogram shape calculation
diff: @@ -75,8 +75,8 @@ Status SpectrogramShapeFn(InferenceContext* c) {
  int32 stride;
  TF_RETURN_IF_ERROR(c->GetAttr("stride", &stride));
  - DimensionHandle input_channels = c->Dim(input, 0);
  - DimensionHandle input_length = c->Dim(input, 1);
  + DimensionHandle input_length = c->Dim(input, 0);
  + DimensionHandle input_channels = c->Dim(input, 1);
  DimensionHandle output_length;
  if (!c->ValueKnown(input_length)) {
  