Minor code cleanup

Author: manuelbl

java-does-usb/jextract/README.md

@@ -96,7 +96,7 @@ The known limitations are:
 
 *jextract* generates a comprehensive set of methods for each function, struct, struct member etc. Most of it will not be used as a typical application just uses a subset of struct members, might only read or write them etc. So a considerable amount of code is generated. For some types, it's a bit excessive.
 
-The worst example is [`IOUSBInterfaceStruct190`](https://github.com/manuelbl/JavaDoesUSB/blob/main/java-does-usb/src/main/java/net/codecrete/usb/macos/gen/iokit/IOUSBInterfaceStruct190.java) (macOS). This is a `struct` consisting of about 50 member functions. It's basically a vtable of a C++ class. For this single `struct`, *jextract* generates codes resulting in 70 class files with a total size of 227kByte..
+The worst example is [`IOUSBInterfaceStruct190`](https://github.com/manuelbl/JavaDoesUSB/blob/main/java-does-usb/src/main/java/net/codecrete/usb/macos/gen/iokit/IOUSBInterfaceStruct190.java) (macOS). This is a `struct` consisting of about 50 member functions. It's basically a vtable of a C++ class. For this single `struct`, *jextract* generates codes resulting in 70 class files with a total size of 227kByte.
 
 The table below shows statistics for version 0.6.0 of the library:
 

java-does-usb/src/main/java/net/codecrete/usb/windows/InterfaceHandle.java

@@ -20,11 +20,11 @@ class InterfaceHandle {
     /**
      * The number of this interface.
      */
-    int interfaceNumber;
+    final int interfaceNumber;
     /**
      * The number of the first interface in the same composite function.
      */
-    int firstInterfaceNumber;
+    final int firstInterfaceNumber;
     /**
      * The file handle of the device.
      * <p>

java-does-usb/src/test/java/net/codecrete/usb/special/LogicAnalyzer.java

@@ -309,7 +309,8 @@ void checkFirmware() {
     void sleep(long milliseconds) {
         while (true) {
             try {
-                Thread.sleep(milliseconds);
+                //noinspection BusyWait
+                Thread.sleep(milliseconds); // NOSONAR
                 return;
             } catch (InterruptedException e) {
                 // ignore and try again

java-does-usb/src/test/resources/tinylog.properties

@@ -1,3 +1,3 @@
 writer        = console
 writer.format = {date: HH:mm:ss.SSS} {level|size=5} [{class|size=40}] {message}
-writer.level  = debug
+writer.level  = info