Fix build.

Change-Id: I48b2fdedc86100d3896d2145cf7d0046abdfc767
diff --git a/lib/ExecutionEngine/MCCacheReader.cpp b/lib/ExecutionEngine/MCCacheReader.cpp
index ba1f7fc..b017ffd 100644
--- a/lib/ExecutionEngine/MCCacheReader.cpp
+++ b/lib/ExecutionEngine/MCCacheReader.cpp
@@ -392,7 +392,7 @@
     LOGE("Read file Error");
     return false;
   }
-  LOGD("Read object file size %d", mEmittedELFExecutable.size());
+  LOGD("Read object file size %d", (int)mEmittedELFExecutable.size());
   mpResult->mRSExecutable =
   rsloaderCreateExec((unsigned char *)&*mEmittedELFExecutable.begin(),
                      mEmittedELFExecutable.size(),