Builtins command registry: Add null check for configpath parameter

Author: mattirn

console/src/main/java/org/jline/console/impl/Builtins.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002-2020, the original author or authors.
+ * Copyright (c) 2002-2022, the original author or authors.
  *
  * This software is distributable under the BSD license. See the terms of the
  * BSD license in the documentation provided with this software.
@@ -74,6 +74,7 @@ public Builtins(Supplier<Path> workDir, ConfigurationPath configPath, Function<S
 
     public Builtins(Set<Command> commands, Supplier<Path> workDir, ConfigurationPath configpath, Function<String, Widget> widgetCreator) {
         super();
+        Objects.requireNonNull(configpath);
         this.configPath = configpath;
         this.widgetCreator = widgetCreator;
         this.workDir = workDir;