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/CodexTest.cpp b/tests/CodexTest.cpp
index be25dc3..bdb5e77 100644
--- a/tests/CodexTest.cpp
+++ b/tests/CodexTest.cpp
@@ -637,7 +637,7 @@
         return;
     }
     SkAutoTDelete<SkCodec> decoder(SkCodec::NewFromStream(stream.release()));
-    
+
     // This should return kSuccess because kIndex8 is supported.
     SkPMColor colorStorage[256];
     int colorCount;