"NULL !=" = NULL

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/544233002
diff --git a/src/gpu/GrAllocPool.cpp b/src/gpu/GrAllocPool.cpp
index c92ebbd..9594c94 100644
--- a/src/gpu/GrAllocPool.cpp
+++ b/src/gpu/GrAllocPool.cpp
@@ -90,7 +90,7 @@
 void GrAllocPool::release(size_t bytes) {
     this->validate();
 
-    while (bytes && NULL != fBlock) {
+    while (bytes && fBlock) {
         bytes = fBlock->release(bytes);
         if (fBlock->empty()) {
             Block* next = fBlock->fNext;