Improving system health diags

Change-Id: Id3de46c48421051bc5680e05bcf77492aa793000
diff --git a/tests/tapl/com/android/launcher3/tapl/TestHelpers.java b/tests/tapl/com/android/launcher3/tapl/TestHelpers.java
index 399c59d..a089a52 100644
--- a/tests/tapl/com/android/launcher3/tapl/TestHelpers.java
+++ b/tests/tapl/com/android/launcher3/tapl/TestHelpers.java
@@ -109,7 +109,7 @@
         DropBoxManager.Entry entry;
         StringBuilder errorDetails = new StringBuilder();
         while (null != (entry = dropbox.getNextEntry(label, timestamp))) {
-            if (errorDetails.length() != 0) errorDetails.append("------------------------------");
+            errorDetails.append("------------------------------\n");
             timestamp = entry.getTimeMillis();
             errorDetails.append(new Date(timestamp));
             errorDetails.append(": ");