Style bikeshed - remove extraneous whitespace

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842753002

Review URL: https://codereview.chromium.org/1842753002
diff --git a/tests/DataRefTest.cpp b/tests/DataRefTest.cpp
index a474019..03b80fb 100644
--- a/tests/DataRefTest.cpp
+++ b/tests/DataRefTest.cpp
@@ -271,7 +271,7 @@
 static void check_alphabet_buffer(skiatest::Reporter* reporter, const SkROBuffer* reader) {
     size_t size = reader->size();
     REPORTER_ASSERT(reporter, size % 26 == 0);
-    
+
     SkAutoTMalloc<char> storage(size);
     SkROBuffer::Iter iter(reader);
     size_t offset = 0;