wic: Initialize return values in find_artifacts()

If one of these isn't found, it won't be initialized and will throw an
UnboundLocalError.

(From OE-Core master rev: ce6c3ec0e5f4822e85b8f957e9e31fa9de438c55)

(From OE-Core rev: 9bf229c7b66bda4fb52f53d6f7f6b86f10dc8681)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/lib/image/engine.py b/scripts/lib/image/engine.py
index be29222df1..b3a9c7486e 100644
--- a/scripts/lib/image/engine.py
+++ b/scripts/lib/image/engine.py
@@ -82,6 +82,8 @@ def find_artifacts(image_name):
         print "Couldn't get '%s' output, exiting." % bitbake_env_cmd
         sys.exit(1)
 
+    rootfs_dir = kernel_dir = hdddir = staging_data_dir = native_sysroot = ""
+
     for line in bitbake_env_lines.split('\n'):
         if (get_line_val(line, "IMAGE_ROOTFS")):
             rootfs_dir = get_line_val(line, "IMAGE_ROOTFS")