patch 9.0.1975: xattr: permission-denied errors on write

Problem:  xattr: permission-denied errors on write
Solution: ignore those errors

closes: #13246

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Gene C <arch@sapience.com>

Author: Gene C

src/errors.h

@@ -3554,12 +3554,10 @@ EXTERN char e_invalid_format_specifier_str[]
 	INIT(= N_("E1505: Invalid format specifier: %s"));
 EXTERN char e_xattr_erange[]
 	INIT(= N_("E1506: Buffer too small to copy xattr value or key"));
-EXTERN char e_xattr_enotsup[]
-	INIT(= N_("E1507: Extended attributes are not supported by the filesystem"));
 EXTERN char e_xattr_e2big[]
 	INIT(= N_("E1508: Size of the extended attribute value is larger than the maximum size allowed"));
 EXTERN char e_xattr_other[]
 	INIT(= N_("E1509: Error occured when reading or writing extended attribute"));
-// E1509 - E1519 unused
+// E1507, E1509 - E1519 unused
 EXTERN char e_aptypes_is_null_nr_str[]
 	INIT(= "E1520: Internal error: ap_types or ap_types[idx] is NULL: %d: %s");

src/os_unix.c

@@ -3154,8 +3154,9 @@ mch_copy_xattr(char_u *from_file, char_u *to_file)
 			errmsg = e_xattr_e2big;
 			goto error_exit;
 		    case ENOTSUP:
-			errmsg = e_xattr_enotsup;
-			goto error_exit;
+		    case EACCES:
+		    case EPERM:
+			break;
 		    case ERANGE:
 			errmsg = e_xattr_erange;
 			goto error_exit;

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1975,
 /**/
     1974,
 /**/