Bug 1048011 - Fix a race condition that causes PProcLoaderParent leak. r=khuey

--HG--
extra : rebase_source : d0230771da1992fab13681c9b5baa585d334d0cc

ipc/glue/ProcessUtils_linux.cpp

@@ -122,12 +122,22 @@ public:
 void
 ProcLoaderParent::ActorDestroy(ActorDestroyReason aWhy)
 {
+  if (aWhy == AbnormalShutdown) {
+    NS_WARNING("ProcLoaderParent is destroyed abnormally.");
+  }
+
+  if (sProcLoaderClientOnDeinit) {
+    // Get error for closing while the channel is already error.
+    return;
+  }
+
+  // Destroy self asynchronously.
+  ProcLoaderClientDeinit();
 }
 
 static void
 _ProcLoaderParentDestroy(PProcLoaderParent *aLoader)
 {
-  aLoader->Close();
   delete aLoader;
   sProcLoaderClientOnDeinit = false;
 }
@@ -136,7 +146,6 @@ bool
 ProcLoaderParent::RecvLoadComplete(const int32_t &aPid,
                                    const int32_t &aCookie)
 {
-  ProcLoaderClientDeinit();
   return true;
 }