Fixed NPE when decompiling java.lang.Object

Author: emmanue1

src/main/java/org/jd/core/v1/service/converter/classfiletojavasyntax/util/LocalVariableMaker.java

@@ -74,7 +74,10 @@ public LocalVariableMaker(ObjectTypeMaker objectTypeMaker, SignatureParser signa
         }
 
         objectTypeMaker.make(classFile.getInternalTypeName()).accept(populateBlackListNamesVisitor);
-        objectTypeMaker.make(classFile.getSuperTypeName()).accept(populateBlackListNamesVisitor);
+
+        if (classFile.getSuperTypeName() != null) {
+            objectTypeMaker.make(classFile.getSuperTypeName()).accept(populateBlackListNamesVisitor);
+        }
 
         if (classFile.getInterfaceTypeNames() != null) {
             for (String interfaceTypeName : classFile.getInterfaceTypeNames()) {

src/main/java/org/jd/core/v1/service/deserializer/classfile/ClassFileDeserializer.java

@@ -101,7 +101,7 @@ protected ClassFile loadClassFile(ClassFileReader reader) throws UTFDataFormatEx
         int superClassIndex = reader.readUnsignedShort();
 
         String internalTypeName = constants.getConstantTypeName(thisClassIndex);
-        String superTypeName = constants.getConstantTypeName(superClassIndex);
+        String superTypeName = "java/lang/Object".equals(internalTypeName) ? null : constants.getConstantTypeName(superClassIndex);
         String[] interfaceTypeNames = loadInterfaces(reader, constants);
         Field[] fields = loadFields(reader, constants);
         Method[] methods = loadMethods(reader, constants);