fix: reuse reference instead of calling getter twice (#983)

fix for #982 changed switch parameter in parseValue from calling getCurrentToken() again to just declared and assigned local member "token" two lines above

Author: cryptearth

google-http-client/src/main/java/com/google/api/client/json/JsonParser.java

@@ -717,7 +717,7 @@ private final Object parseValue(
  // value type is now null, class, parameterized type, or generic array type
  JsonToken token = getCurrentToken();
  try {
- switch (getCurrentToken()) {
+ switch (token) {
  case START_ARRAY:
  case END_ARRAY:
  boolean isArray = Types.isArray(valueType);