`orc-tools json-schema` fails at empty json file with EOFException

$ orc-tools version
ORC 1.6.9

$ touch empty.json

$ orc-tools json-schema empty.json
Reading file empty.json
Exception in thread "main" com.google.gson.JsonIOException: java.io.EOFException: End of input at line 1 column 1
	at com.google.gson.JsonStreamParser.hasNext(JsonStreamParser.java:109)
	at org.apache.orc.tools.json.JsonSchemaFinder.addFile(JsonSchemaFinder.java:255)
	at org.apache.orc.tools.json.JsonSchemaFinder.addFile(JsonSchemaFinder.java:250)
	at org.apache.orc.tools.json.JsonSchemaFinder.main(JsonSchemaFinder.java:332)
	at org.apache.orc.tools.Driver.main(Driver.java:114)
Caused by: java.io.EOFException: End of input at line 1 column 1
	at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1377)
	at com.google.gson.stream.JsonReader.consumeNonExecutePrefix(JsonReader.java:1514)
	at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:523)
	at com.google.gson.stream.JsonReader.peek(JsonReader.java:414)
	at com.google.gson.JsonStreamParser.hasNext(JsonStreamParser.java:105)
	... 4 more