Fix one more file

Muxi Yan · Muxi Yan · commit 2a03c876ec4d · 2018-03-12T14:54:55.000-07:00
diff --git a/test/cpp/thread_manager/thread_manager_test.cc b/test/cpp/thread_manager/thread_manager_test.cc
@@ -16,6 +16,7 @@
  *is % allowed in string
  */
 
+#include <inttypes.h>
 #include <ctime>
 #include <memory>
 #include <string>
