Add missing TAP test name

Author: petere

src/bin/pg_waldump/t/002_save_fullpage.pl

@@ -75,7 +75,8 @@ sub get_block_lsn
 		'--save-fullpage', "$tmp_folder/raw",
 		'--relation',      $relation,
 		$walfile
-	]);
+	],
+	'pg_waldump with --save-fullpage runs');
 
 # This regexp will match filenames formatted as:
 # XXXXXXXX-XXXXXXXX.DBOID.TLOID.NODEOID.dd_fork with the components being: