Coverity: Initialize member variables.

ppapi/proxy/ppp_mouse_lock_proxy.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppp_mouse_lock_proxy.h"
 
 #include "ppapi/c/ppp_mouse_lock.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
@@ skipping 18 matching lines @@
   &MouseLockLost
 };
 
 InterfaceProxy* CreateMouseLockProxy(Dispatcher* dispatcher) {
   return new PPP_MouseLock_Proxy(dispatcher);
 }
 
 }  // namespace
 
 PPP_MouseLock_Proxy::PPP_MouseLock_Proxy(Dispatcher* dispatcher)
-    : InterfaceProxy(dispatcher) {
+    : InterfaceProxy(dispatcher),
+      ppp_mouse_lock_impl_(NULL) {
   if (dispatcher->IsPlugin()) {
     ppp_mouse_lock_impl_ = static_cast<const PPP_MouseLock*>(
         dispatcher->local_get_interface()(PPP_MOUSELOCK_INTERFACE));
   }
 }
 
 PPP_MouseLock_Proxy::~PPP_MouseLock_Proxy() {
 }
 
 // static
@@ skipping 18 matching lines @@
   return handled;
 }
 
 void PPP_MouseLock_Proxy::OnMsgMouseLockLost(PP_Instance instance) {
   if (ppp_mouse_lock_impl_)
     ppp_mouse_lock_impl_->MouseLockLost(instance);
 }
 
 }  // namespace proxy
 }  // namespace ppapi