Fix -Wreorder warnings in the Windows code.

src/client/windows/crash_generation/crash_generation_client.cc

Index: src/client/windows/crash_generation/crash_generation_client.cc
===================================================================
--- src/client/windows/crash_generation/crash_generation_client.cc	(revision 1470)
+++ src/client/windows/crash_generation/crash_generation_client.cc	(working copy)
@@ -96,14 +96,14 @@
     const CustomClientInfo* custom_info)
         : pipe_name_(pipe_name),
           pipe_handle_(NULL),
+          custom_info_(),
           dump_type_(dump_type),
-          thread_id_(0),
-          server_process_id_(0),
           crash_event_(NULL),
           crash_generated_(NULL),
           server_alive_(NULL),
-          exception_pointers_(NULL),
-          custom_info_() {
+          server_process_id_(0),
+          thread_id_(0),
+          exception_pointers_(NULL) {
   memset(&assert_info_, 0, sizeof(assert_info_));
   if (custom_info) {
     custom_info_ = *custom_info;
@@ -116,14 +116,14 @@
     const CustomClientInfo* custom_info)
         : pipe_name_(),
           pipe_handle_(pipe_handle),
+          custom_info_(),
           dump_type_(dump_type),
-          thread_id_(0),
-          server_process_id_(0),
           crash_event_(NULL),
           crash_generated_(NULL),
           server_alive_(NULL),
-          exception_pointers_(NULL),
-          custom_info_() {
+          server_process_id_(0),
+          thread_id_(0),
+          exception_pointers_(NULL) {
   memset(&assert_info_, 0, sizeof(assert_info_));
   if (custom_info) {
     custom_info_ = *custom_info;