[fix] better solution for handling empty result (#1796)

Xingchen Song(宋星辰)

2024-06-11 0bd1a4d6a9893e45438505514a063d9deee91f21

 runtime/onnxruntime/src/phone-set.h

@@ -5,6 +5,7 @@
#include <string>
#include <vector>
#include <unordered_map>
#include "nlohmann/json.hpp"
#define UNIT_BEG_SIL_SYMBOL "<s>"
#define UNIT_END_SIL_SYMBOL "</s>"
#define UNIT_BLK_SYMBOL "<blank>"
@@ -28,6 +29,7 @@
    vector<string> phone_;
    unordered_map<string, int> phn2Id_;
    void LoadPhoneSetFromYaml(const char* filename);
    void LoadPhoneSetFromJson(const char* filename);
};

} // namespace funasr