test: addresses PR comments

thiagotnunes · thiagotnunes · commit a038b11873ca · 2021-03-16T09:06:18.000+11:00
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/it/ITBackupTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/it/ITBackupTest.java
@@ -403,7 +403,7 @@ private <T> T getOrThrow(OperationFuture<T, ?> operation)
     try {
       return operation.get();
     } catch (ExecutionException e) {
-      if (e.getCause() != null && e.getCause() instanceof SpannerException) {
+      if (e.getCause() instanceof SpannerException) {
         throw (SpannerException) e.getCause();
       } else {
         throw e;
