clean up Path usage

Author: evanchooly

dd-java-agent/agent-debugger/src/main/java/com/datadog/debugger/agent/DebuggerTransformer.java

@@ -846,7 +846,7 @@ private void dumpOriginalClassFile(String className, byte[] classfileBuffer) {
 
   private static Path dumpClassFile(String className, byte[] classfileBuffer) {
     try {
-      Path classFilePath = Paths.get(DUMP_PATH.toString(), className + ".class");
+      Path classFilePath = DUMP_PATH.resolve(className + ".class");
       Files.createDirectories(classFilePath.getParent());
       Files.write(classFilePath, classfileBuffer, StandardOpenOption.CREATE);
       return classFilePath;