Fix hwui compile error only seen with debug switch.

Bug: None
Test: Build succeeded
Change-Id: I26e3f4fdc10f27d7eb7f3987d0f3e5dfa1bc9f45
diff --git a/libs/hwui/renderthread/OpenGLPipeline.cpp b/libs/hwui/renderthread/OpenGLPipeline.cpp
index 177a729..9dc2b59 100644
--- a/libs/hwui/renderthread/OpenGLPipeline.cpp
+++ b/libs/hwui/renderthread/OpenGLPipeline.cpp
@@ -88,7 +88,7 @@
     caches.tessellationCache.trim();
 
 #if DEBUG_MEMORY_USAGE
-    mCaches.dumpMemoryUsage();
+    caches.dumpMemoryUsage();
 #else
     if (CC_UNLIKELY(Properties::debugLevel & kDebugMemory)) {
         caches.dumpMemoryUsage();