Fixed NPE in ScriptingExample due to nonpushing visitor not loaded

JavaBytecodeCompiler/src/main/java/org/openzen/zenscript/javabytecode/compiler/JavaExpressionVisitor.java

     private final JavaBoxingTypeVisitor boxingTypeVisitor;
     private final JavaUnboxingTypeVisitor unboxingTypeVisitor;
     private final JavaCapturedExpressionVisitor capturedExpressionVisitor = new JavaCapturedExpressionVisitor(this);
-    private final JavaBytecodeContext context;
-    private final JavaCompiledModule module;
+    final JavaBytecodeContext context;
+    final JavaCompiledModule module;
 
 	public JavaExpressionVisitor(JavaBytecodeContext context, JavaCompiledModule module, JavaWriter javaWriter) {
 		this.javaWriter = javaWriter;

JavaBytecodeCompiler/src/main/java/org/openzen/zenscript/javabytecode/compiler/JavaStatementVisitor.java

 public class JavaStatementVisitor implements StatementVisitor<Boolean> {
     private final JavaWriter javaWriter;
 	final JavaBytecodeContext context;
-    public JavaExpressionVisitor expressionVisitor;
-	public JavaNonPushingExpressionVisitor nonPushingExpressionVisitor;
+    public final JavaExpressionVisitor expressionVisitor;
+	public final JavaNonPushingExpressionVisitor nonPushingExpressionVisitor;
 
     /**
      * @param javaWriter the method writer that compiles the statement
         this.javaWriter = javaWriter;
 		this.context = context;
         this.expressionVisitor = new JavaExpressionVisitor(context, module, javaWriter);
-		nonPushingExpressionVisitor = new JavaNonPushingExpressionVisitor(context, module, javaWriter, expressionVisitor);
+		this.nonPushingExpressionVisitor = new JavaNonPushingExpressionVisitor(context, module, javaWriter, expressionVisitor);
     }
 
     public JavaStatementVisitor(JavaBytecodeContext context, JavaExpressionVisitor expressionVisitor) {
         this.javaWriter = expressionVisitor.getJavaWriter();
 		this.context = context;
         this.expressionVisitor = expressionVisitor;
+		this.nonPushingExpressionVisitor = new JavaNonPushingExpressionVisitor(expressionVisitor.context, expressionVisitor.module, expressionVisitor.javaWriter, expressionVisitor);
     }
 
 	@Override