tests: fix the check-code rule for testing non-existent files

I missed this in feecfefeba25.

contrib/check-code.py

@@ -185,7 +185,7 b' utestpats = ['
      'use $LOCALIP not an explicit loopback address'),
     (r'^  (?![>$] ).*\$LOCALIP.*[^)]$',
      'mark $LOCALIP output lines with (glob) to help tests in BSD jails'),
-    (r'^  (cat|find): .*: No such file or directory',
+    (r'^  (cat|find): .*: \$ENOENT\$',
      'use test -f to test for file existence'),
     (r'^  diff -[^ -]*p',
      "don't use (external) diff with -p for portability"),

tests/test-lfs.t

@@ -571,8 +571,7 b" repo12 doesn't have any cached lfs files"
 files.  Therefore, the files don't exist in the remote store.  Use the files in
 the user cache.
 
-  $ find $TESTTMP/repo12/.hg/store/lfs/objects -type f
-  find: */repo12/.hg/store/lfs/objects*: $ENOENT$ (glob)
+  $ test -d $TESTTMP/repo12/.hg/store/lfs/objects
   [1]
 
   $ hg --config extensions.share= share repo12 repo13