[PATCH 2/2] wic: bootimg-efi: fix error handling

["Enrico Jörns" <ejo@pengutronix.de>]

If we check for empty variables, it does not make sense to print their
content in case they are empty.

Additionally, the error message in the 'kernel' check attempted to print
the wrong variable ('target') which was not even defined, yet.

Also, raising WicError doesn't require an extra newline.

Signed-off-by: Enrico Jörns <ejo@pengutronix.de>
---
 scripts/lib/wic/plugins/source/bootimg-efi.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
index 13a9cddf4e..7cc5131541 100644
--- a/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -428,10 +428,10 @@ class BootimgEFIPlugin(SourcePlugin):
             elif source_params['loader'] == 'uefi-kernel':
                 kernel = get_bitbake_var("KERNEL_IMAGETYPE")
                 if not kernel:
-                    raise WicError("Empty KERNEL_IMAGETYPE %s\n" % target)
+                    raise WicError("Empty KERNEL_IMAGETYPE")
                 target = get_bitbake_var("TARGET_SYS")
                 if not target:
-                    raise WicError("Unknown arch (TARGET_SYS) %s\n" % target)
+                    raise WicError("Empty TARGET_SYS")
 
                 if re.match("x86_64", target):
                     kernel_efi_image = "bootx64.efi"
-- 
2.39.2