HDFS-9609. libhdfs++: Allow seek to EOF. Contributed by Bob Hansen

hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc

@@ -120,7 +120,7 @@ Status FileHandleImpl::Seek(off_t *offset, std::ios_base::seekdir whence) {
 bool FileHandleImpl::CheckSeekBounds(ssize_t desired_position) {
   ssize_t file_length = file_info_->file_length_;
 
-  if (desired_position < 0 || desired_position >= file_length) {
+  if (desired_position < 0 || desired_position > file_length) {
     return false;
   }