fix building errors

Author: csukuangfj

scripts/bbpe/generate_bbpe_table.py

@@ -36,6 +36,7 @@ def main():
     s += "\n"
     s += '#include "sherpa-onnx/csrc/bbpe.h"\n'
     s += "\n"
+    s += "#include <cstdint>\n"
     s += "#include <string>\n"
     s += "#include <unordered_map>\n"
     s += "\n"

sherpa-onnx/csrc/bbpe.cc

@@ -6,6 +6,7 @@
 
 #include "sherpa-onnx/csrc/bbpe.h"
 
+#include <cstdint>
 #include <string>
 #include <unordered_map>
 

sherpa-onnx/csrc/bbpe.h

@@ -4,6 +4,7 @@
 
 #ifndef SHERPA_ONNX_CSRC_BBPE_H_
 #define SHERPA_ONNX_CSRC_BBPE_H_
+#include <cstdint>
 #include <string>
 #include <unordered_map>