Fix mbtk/test/Mobiletek_Tester_RDIT build error.

Change-Id: Ia6e6b9c75f797976fe2152484fbce12a092dbb2f
diff --git a/mbtk/test/Mobiletek_Tester_RDIT/dispatch.cpp b/mbtk/test/Mobiletek_Tester_RDIT/dispatch.cpp
index a4f6071..318b64f 100755
--- a/mbtk/test/Mobiletek_Tester_RDIT/dispatch.cpp
+++ b/mbtk/test/Mobiletek_Tester_RDIT/dispatch.cpp
@@ -5,6 +5,7 @@
 #include <sys/types.h>
 #include <pthread.h>
 #include <errno.h>
+#include <string.h>
 
 #include "dispatch.h"
 #include "lynq.h"