containerd: Add error handling in getImageConfig for GetImageHash.

Added proper error logging and return when `GetImageHash` fails in the
`getImageConfig` function. This ensures that the error is not silently ignored
and provides clearer debugging information.

Signed-off-by: Nikolay Martyanov <[email protected]>

Author: OhmSpectator

pkg/pillar/cas/containerd.go

@@ -914,7 +914,8 @@ func getImageConfig(c *containerdCAS, reference string) (*ocispec.Image, error)
 	imageParentHash, err := c.GetImageHash(reference)
 	if err != nil {
 		err = fmt.Errorf("getImageConfig: exception while fetching reference hash of %s: %s", reference, err.Error())
-
+		logrus.Errorf(err.Error())
+		return nil, err
 	}
 
 	ctrdCtx, done := c.ctrdClient.CtrNewUserServicesCtx()