1. CoreOpenImageFile(): FilePath should be IN OUT.

2. Use offset address to build device path instead of absolute address.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4294 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Dxe/Image/Image.c

@@ -639,7 +639,7 @@ Returns:
              BootPolicy,
              SourceBuffer,
              SourceSize,
-             FilePath,
+             &FilePath,
              &DeviceHandle,
              &FHand,
              &AuthenticationStatus
@@ -679,6 +679,7 @@ Returns:
   //
   // Pull out just the file portion of the DevicePath for the LoadedImage FilePath
   //
+  FilePath = OriginalFilePath;
   Status = CoreHandleProtocol (DeviceHandle, &gEfiDevicePathProtocolGuid, (VOID **)&HandleFilePath);
   if (!EFI_ERROR (Status)) {
     FilePathSize = CoreDevicePathSize (HandleFilePath) - sizeof(EFI_DEVICE_PATH_PROTOCOL);