Fixed "unknown command" on vanilla commands with no args (even though it's intended behavior...)

src/main/java/org/bukkit/command/defaults/PardonCommand.java

@@ -29,6 +29,6 @@ public class PardonCommand extends VanillaCommand {
 
     @Override
     public boolean matches(String input) {
-        return input.startsWith("pardon ");
+        return input.startsWith("pardon ") || input.equalsIgnoreCase("pardon");
     }
 }