Bug 1118031: Fix toolhelp32 snapshot leak in PluginModuleParent; r=jimm

--HG--
extra : rebase_source : 06a78b31d2e51744fcbf020e838e4579bfaad28a

dom/plugins/ipc/PluginModuleParent.cpp

@@ -35,8 +35,9 @@
 #include "nsPluginTags.h"
 
 #ifdef XP_WIN
-#include "PluginHangUIParent.h"
 #include "mozilla/widget/AudioSession.h"
+#include "nsWindowsHelpers.h"
+#include "PluginHangUIParent.h"
 #endif
 
 #ifdef MOZ_ENABLE_PROFILER_SPS
@@ -2481,7 +2482,7 @@ PluginModuleChromeParent::InitializeInjector()
         return;
 
     TimeStamp th32Start = TimeStamp::Now();
-    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    nsAutoHandle snapshot(CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0));
     if (INVALID_HANDLE_VALUE == snapshot)
         return;
     TimeStamp th32End = TimeStamp::Now();