[BUILD] remove a warning in standard.h on AIX
diff --git a/include/common/standard.h b/include/common/standard.h
index 7a63729..c1f3d1a 100644
--- a/include/common/standard.h
+++ b/include/common/standard.h
@@ -23,6 +23,7 @@
 #define _COMMON_STANDARD_H
 
 #include <limits.h>
+#include <string.h>
 #include <time.h>
 #include <sys/types.h>
 #include <netinet/in.h>