Restored the thread's interrupted status.

java-fast/io/nayuki/fastqrcodegen/Memoizer.java

@@ -83,6 +83,7 @@ final class Memoizer<T,R> {
 				try {
 					this.wait();
 				} catch (InterruptedException e) {
+					Thread.currentThread().interrupt();
 					throw new RuntimeException(e);
 				}
 			}