cmd_fsck: just exit if passed -a

-a is used when called from system to mean "automatic invocation, run
check only if you think you need it".

Since we have self healing and online fsck, we never need run fsck
automatically at boot time.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

c_src/cmd_fsck.c

@@ -227,7 +227,10 @@ int cmd_fsck(int argc, char *argv[])
 				  "apynfo:rRkKvh",
 				  longopts, NULL)) != -1)
 		switch (opt) {
-		case 'a': /* outdated alias for -p */
+		case 'a':
+			/* "automatic" run, called by the system, for us to do checks as needed.
+			 *  we don't need checks here: */
+			exit(EXIT_SUCCESS);
 		case 'p':
 		case 'y':
 			append_opt(&opts_str, "fix_errors=yes");