#include <arpa/inet.h> for htonl.

Not sure why this only shows up with clang.

Change-Id: Id5603483e32f8a8d4b091dbb31b3142e3f77deac
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
index 0c1b80f..38e9d17 100644
--- a/debuggerd/tombstone.cpp
+++ b/debuggerd/tombstone.cpp
@@ -16,6 +16,7 @@
 
 #define LOG_TAG "DEBUG"
 
+#include <arpa/inet.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>