POSIX error ENODATA has been deprecated.

Chromium (libc++) change:

llvm/llvm-project#80542

commit e3fe3e833ae34840f04f0999fa3538c554010e9b
Author: Mark de Wever <[email protected]>
Date:   Thu Mar 21 12:14:24 2024 +0100

    [libc++] Deprecates std::errc constants. (#80542)

    Implements:
    - LWG3869 Deprecate std::errc constants related to UNIX STREAMS

Author: mkarolin

components/brave_referrals/browser/file_extended_attribute.cc

@@ -26,11 +26,13 @@ int GetFileExtendedAttribute(const base::FilePath& path,
   ssize_t length = getxattr(path.value().c_str(), name, value->data(),
                             expected_length, /*position=*/0,
                             /*options=*/0);
-  if (length != expected_length) {
+  if (length < 0) {
+    return errno;
+  } else if (length != expected_length) {
     VLOG(0) << "Failed to retrieve extended attribute " << name << " from file "
             << path << ". The expected data length (" << expected_length
             << ") and actual data length (" << length << ") do not match.";
-    return ENODATA;
+    return ENOTRECOVERABLE;
   }
 
   return 0;

components/brave_referrals/browser/file_extended_attribute.h

@@ -18,7 +18,7 @@ namespace brave {
 // interest:
 // ENOATTR - the attribute with the given |name| was not found.
 // ENOTSUP - the file system doesn't support (or disabled) extended attributes.
-// ENODATA - the value could not be retrieved.
+// ENOTRECOVERABLE - the value could not be retrieved.
 int GetFileExtendedAttribute(const base::FilePath& path,
                              const char* name,
                              std::vector<char>* value);