guard references to SkColorTable

Bug: skia:6828
Change-Id: I0c8c78e70b118f51cb59dc45675e4ddcd4776108
Reviewed-on: https://skia-review.googlesource.com/24260
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
diff --git a/tests/WritePixelsTest.cpp b/tests/WritePixelsTest.cpp
index e26e134..3aec3e6 100644
--- a/tests/WritePixelsTest.cpp
+++ b/tests/WritePixelsTest.cpp
@@ -264,7 +264,7 @@
     if (!bm->setInfo(info, rowBytes)) {
         return false;
     }
-    sk_sp<SkPixelRef> pr = SkMallocPixelRef::MakeAllocate(info, rowBytes, nullptr);
+    sk_sp<SkPixelRef> pr = SkMallocPixelRef::MakeAllocate(info, rowBytes);
     bm->setPixelRef(std::move(pr), 0, 0);
     return true;
 }