wic: engine.py: use raw string for escape sequence

Fixes:

| poky/scripts/lib/wic/engine.py:362: SyntaxWarning: invalid escape sequence '\/'

(From OE-Core rev: ab3ed4270af1c8d4a4dd15b8c6998182801d4bce)

Signed-off-by: Enrico Jörns <ejo@pengutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit e33d7241f6c2897e930aff41e18b154891197ab9)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/lib/wic/engine.py b/scripts/lib/wic/engine.py
index 674ccfc244..ce7e6c5d75 100644
--- a/scripts/lib/wic/engine.py
+++ b/scripts/lib/wic/engine.py
@@ -359,7 +359,7 @@ class Disk:
         Remove files/dirs and their contents from the partition.
         This only applies to ext* partition.
         """
-        abs_path = re.sub('\/\/+', '/', path)
+        abs_path = re.sub(r'\/\/+', '/', path)
         cmd = "{} {} -wR 'rm \"{}\"'".format(self.debugfs,
                                             self._get_part_image(pnum),
                                             abs_path)