tests: fix warning

Building CXX object tests/CMakeFiles/testDeviceSettings.dir/testDeviceSettings.cpp.o
/home/travis/build/ralovich/antpm/src/tests/testDeviceSettings.cpp: In member function ‘void convert_0::test_method()’:
/home/travis/build/ralovich/antpm/src/tests/testDeviceSettings.cpp:73:17: warning: unused variable ‘s’ [-Wunused-variable]
/home/travis/build/ralovich/antpm/src/tests/testDeviceSettings.cpp:74:17: warning: unused variable ‘t’ [-Wunused-variable]

1 files changed, 2 insertions, 0 deletions

diff --git a/src/tests/testDeviceSettings.cpp b/src/tests/testDeviceSettings.cpp
index d569e03..4117d1e 100644
--- a/src/tests/testDeviceSettings.cpp
+++ b/src/tests/testDeviceSettings.cpp
@@ -72,6 +72,8 @@ BOOST_AUTO_TEST_CASE(convert_0)
   {
     const char* s="2013-07-06T20:40:16Z";
     std::time_t t=1373143216;
+    (void)(s);
+    (void)(t);
 
     //LOG(LOG_INF) << DeviceSettings::str2time(s) << "\t" << t << "\n" << std::endl;
   }