liblog: test: __android_log_btwrite__android_log_close precharge

TEST_PREFIX missing before operations on
liblog*.__android_log_btwrite__android_log_close tests

Test: gTest liblog-unit-tests
Bug: 27405083
Change-Id: Iaddc4e1b1f9afcfd8231c3921605fecefd2b56bf
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index d68ca46..5a52377 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -169,6 +169,9 @@
 
 TEST(liblog, __android_log_btwrite__android_logger_list_read) {
 #if (defined(__ANDROID__) || defined(USING_LOGGER_LOCAL))
+#ifdef TEST_PREFIX
+  TEST_PREFIX
+#endif
   struct logger_list* logger_list;
 
   pid_t pid = getpid();