Fix a bunch of uses of 'short'.

(In particular, port numbers should be unsigned short.)

Change-Id: I944eb0f8e97390f1af8094b07ee7f2a00045bd35
diff --git a/src/jdwp/jdwp.h b/src/jdwp/jdwp.h
index 03c70b0..ad3d077 100644
--- a/src/jdwp/jdwp.h
+++ b/src/jdwp/jdwp.h
@@ -95,7 +95,7 @@
   bool server;
   bool suspend;
   std::string host;
-  short port;
+  uint16_t port;
 };
 
 struct JdwpEvent;