"NULL !=" = NULL

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/544233002
diff --git a/src/effects/SkLayerDrawLooper.cpp b/src/effects/SkLayerDrawLooper.cpp
index 19525ec..30709c4 100644
--- a/src/effects/SkLayerDrawLooper.cpp
+++ b/src/effects/SkLayerDrawLooper.cpp
@@ -337,7 +337,7 @@
     if (NULL == fRecs) {
         fRecs = rec;
     } else {
-        SkASSERT(NULL != fTopRec);
+        SkASSERT(fTopRec);
         fTopRec->fNext = rec;
     }
     fTopRec = rec;