initrd/etc/functions: silence output of verify_checksums when no previous tree file exists to be compared against in diff

Signed-off-by: Thierry Laurion <[email protected]>

Author: tlaurion

initrd/etc/functions

@@ -1130,7 +1130,7 @@ verify_checksums() {
 			# which are interpreted by whiptail, less, ...
 			escape_zero "(new) " <"$TMP_TREE_FILE" >"${TMP_TREE_FILE}.user"
 			escape_zero "(new) " </tmp/tree_output >/tmp/tree_output.user
-			diff "${TMP_TREE_FILE}.user" /tmp/tree_output.user | grep -E '^\+\(new\).*$' | sed -r 's/^\+\(new\)/(new)/g' >>/tmp/hash_output
+			diff "${TMP_TREE_FILE}.user" /tmp/tree_output.user 2>/dev/null | grep -E '^\+\(new\).*$' | sed -r 's/^\+\(new\)/(new)/g' >>/tmp/hash_output
 			rm -f "${TMP_TREE_FILE}.user"
 			rm -f /tmp/tree_output.user
 		fi