Replace use of deprecated C Standard library headers in C++ code.

Change-Id: I9fa6630c7e4bdb2897df34d417635d8c7d8253bc
Signed-off-by: Tyler Chatow <tchatow@gmail.com>
diff --git a/frc971/wpilib/spi_rx_clearer.cc b/frc971/wpilib/spi_rx_clearer.cc
index 245f073..1faa3f6 100644
--- a/frc971/wpilib/spi_rx_clearer.cc
+++ b/frc971/wpilib/spi_rx_clearer.cc
@@ -1,10 +1,11 @@
 #include "frc971/wpilib/spi_rx_clearer.h"
 
 #include <fcntl.h>
-#include <inttypes.h>
 #include <sys/mman.h>
 #include <unistd.h>
 
+#include <cinttypes>
+
 #include "aos/logging/logging.h"
 
 namespace frc971 {