old mode 100644
new mode 100755
--- a/netwerk/socket/nsNamedPipeIOLayer.cpp
+++ b/netwerk/socket/nsNamedPipeIOLayer.cpp
@@ -293,32 +293,33 @@ NamedPipeInfo::Connect(const nsACString&
 }
 
 nsresult
 NamedPipeInfo::Disconnect()
 {
   MOZ_ASSERT(OnSocketThread(), "not on socket thread");
 
   nsresult rv = mNamedPipeService->RemoveDataObserver(mPipe, this);
-  NS_WARN_IF(NS_FAILED(rv));
+  Unused << NS_WARN_IF(NS_FAILED(rv));
+
   mPipe = nullptr;
 
   if (mReadOverlapped.hEvent &&
       mReadOverlapped.hEvent != INVALID_HANDLE_VALUE) {
     CloseHandle(mReadOverlapped.hEvent);
     mReadOverlapped.hEvent = nullptr;
   }
 
   if (mWriteOverlapped.hEvent &&
       mWriteOverlapped.hEvent != INVALID_HANDLE_VALUE) {
     CloseHandle(mWriteOverlapped.hEvent);
     mWriteOverlapped.hEvent = nullptr;
   }
 
-  return NS_OK;
+  return rv;
 }
 
 int32_t
 NamedPipeInfo::Read(void* aBuffer, int32_t aSize)
 {
   MOZ_ASSERT(OnSocketThread(), "not on socket thread");
 
   int32_t bytesRead = Peek(aBuffer, aSize);