wic: Initialize return values in find_artifacts()

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

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

diff --git a/scripts/lib/image/engine.py b/scripts/lib/image/engine.py
index be29222df1250ca5df72858f220a682afa6b8475..b3a9c7486ec6d08730bf793b48165b0dcbf30793 100644 (file)
--- 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")