bug fix for punc and umap

shixian.shi

2024-01-23 ae4dceecf03c643be770e3274a070078e45fc9c7

 runtime/onnxruntime/src/audio.cpp

@@ -945,6 +945,7 @@
{
    if (speech_char != nullptr) {
        free(speech_char);
        speech_char = nullptr;
    }

    FILE* fp;