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An empty device list is not an error case, if `lszcrypt` is called without a specific device list or device filter. Return with rc == 0 in such cases. Remove the message about the empty device list on stderr. Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Signed-off-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>