logd: build breakage in user

build breakage in branch: git_klp-dev-gpl @ 1101951

Change-Id: I4c9681bf4c97368ec19f5a79fef134aba937f337
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index aa44264..81eb091 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -39,9 +39,11 @@
     pthread_mutex_init(&mLogElementsLock, NULL);
     dgram_qlen_statistics = false;
 
+#ifdef USERDEBUG_BUILD
     log_id_for_each(i) {
         mMaxSize[i] = LOG_BUFFER_SIZE;
     }
+#endif
 }
 
 void LogBuffer::log(log_id_t log_id, log_time realtime,