server: Return STATUS_BUFFER_TOO_SMALL instead of STATUS_BUFFER_OVERFLOW from get_directory_entry.

dlls/ntdll/tests/om.c

@@ -2637,7 +2637,7 @@ static void test_query_directory(void)
     size = 0xdeadbeef;
     memset( buffer, 0xcc, sizeof(buffer) );
     status = NtQueryDirectoryObject( dir, info, needed_size - 1, TRUE, TRUE, &context, &size );
-    todo_wine ok( status == STATUS_BUFFER_TOO_SMALL, "got %#lx\n", status );
+    ok( status == STATUS_BUFFER_TOO_SMALL, "got %#lx\n", status );
     todo_wine ok( size == needed_size, "expected size %lu, got %lu\n", needed_size, size );
 
     status = NtQueryDirectoryObject( dir, info, sizeof(buffer), TRUE, TRUE, &context, NULL );

server/directory.c

@@ -556,7 +556,7 @@ DECL_HANDLER(get_directory_entry)
                     memcpy( (char *)ptr + name_len, type_name->str, type_name->len );
                 }
             }
-            else set_error( STATUS_BUFFER_OVERFLOW );
+            else set_error( STATUS_BUFFER_TOO_SMALL );
 
             release_object( obj );
         }