Fix another line-end in InterfaceInvokePrivateTest.

Change-Id: I472b11ee26c16e7ffbbd636785961af7832566d5
diff --git a/src/test/java/com/android/tools/r8/desugar/InterfaceInvokePrivateTest.java b/src/test/java/com/android/tools/r8/desugar/InterfaceInvokePrivateTest.java
index a0a0808..7140973 100644
--- a/src/test/java/com/android/tools/r8/desugar/InterfaceInvokePrivateTest.java
+++ b/src/test/java/com/android/tools/r8/desugar/InterfaceInvokePrivateTest.java
@@ -166,7 +166,7 @@
   public static class TestRunner implements I {
 
     public static void main(String[] args) {
-      System.out.println(new TestRunner().hello());
+      System.out.print(new TestRunner().hello());
     }
   }
 }