Add missing field init in constructors

Adds missing field initializations detected by Eclipse IDE.

Change-Id: I5f2f32bcccb12545fc9f0b42fcec74a23dc81376
diff --git a/runtime/jdwp/jdwp_socket.cc b/runtime/jdwp/jdwp_socket.cc
index cbdde24..4fb6df1 100644
--- a/runtime/jdwp/jdwp_socket.cc
+++ b/runtime/jdwp/jdwp_socket.cc
@@ -46,9 +46,11 @@
   uint16_t listenPort;
   int     listenSock;         /* listen for connection from debugger */
 
-  explicit JdwpSocketState(JdwpState* state) : JdwpNetStateBase(state) {
-    listenPort  = 0;
-    listenSock  = -1;
+  explicit JdwpSocketState(JdwpState* state)
+      : JdwpNetStateBase(state),
+        listenPort(0U),
+        listenSock(-1),
+        remote_port_(0U) {
   }
 
   virtual bool Accept();