wic/plugins/rootfs: Fix NameError for 'orig_path'

Fix "NameError: name 'orig_path' is not defined".
It's a typo from when this error was handled outside this function.

(From OE-Core rev: 2124ec0d9f9de2da476f0024a0ccf70da987420f)

Signed-off-by: Mihai Lindner <mihai.lindner@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/plugins/source/rootfs.py

@@ -35,7 +35,7 @@ class RootfsPlugin(SourcePlugin):
     @staticmethod
     def __validate_path(cmd, rootfs_dir, path):
         if os.path.isabs(path):
-            logger.error("%s: Must be relative: %s" % (cmd, orig_path))
+            logger.error("%s: Must be relative: %s" % (cmd, path))
             sys.exit(1)
 
         # Disallow climbing outside of parent directory using '..',