sandbox/win: Fix warnings found by clang chromium-style plugin on Windows.

sandbox/win/src/handle_table.cc

Index: sandbox/win/src/handle_table.cc
diff --git a/sandbox/win/src/handle_table.cc b/sandbox/win/src/handle_table.cc
index 5575dc0fea6ff260cadcbf0903722b446a2740a2..5ebcf99460b543d016673ddf024b918ecd9431ed 100644
--- a/sandbox/win/src/handle_table.cc
+++ b/sandbox/win/src/handle_table.cc
@@ -64,6 +64,9 @@ HandleTable::HandleTable() {
       handle_info_internal()->NumberOfHandles, CompareHandleEntries);
 }
 
+HandleTable::~HandleTable() {
+}
+
 HandleTable::Iterator HandleTable::HandlesForProcess(ULONG process_id) const {
   SYSTEM_HANDLE_INFORMATION key;
   key.ProcessId = static_cast<USHORT>(process_id);
@@ -84,6 +87,9 @@ HandleTable::HandleEntry::HandleEntry(
     : handle_entry_(handle_info_entry), last_entry_(0) {
 }
 
+HandleTable::HandleEntry::~HandleEntry() {
+}
+
 void HandleTable::HandleEntry::UpdateInfo(UpdateType flag) {
   static NtQueryObject QueryObject = NULL;
   if (!QueryObject)