Fix -Wunused-variable warnings

Author: jschmidt-icinga

lib/base/io-engine.cpp

@@ -101,9 +101,7 @@ IoEngine::~IoEngine()
 		boost::asio::post(m_IoContext, []() {
 			throw TerminateIoThread();
 		});
-	}
 
-	for (auto& thread : m_Threads) {
 		thread.join();
 	}
 }

lib/remote/consolehandler.cpp

@@ -21,7 +21,6 @@ using namespace icinga;
 
 REGISTER_URLHANDLER("/v1/console", ConsoleHandler);
 
-static std::mutex l_QueryMutex;
 static std::map<String, ApiScriptFrame> l_ApiScriptFrames;
 static Timer::Ptr l_FrameCleanupTimer;
 static std::mutex l_ApiScriptMutex;

test/icinga-legacytimeperiod.cpp

@@ -397,10 +397,6 @@ void AdvancedHelper(const char *timestamp, DateTime from, DateTime to)
 BOOST_AUTO_TEST_CASE(advanced)
 {
 	String timestamp;
-	boost::posix_time::ptime begin;
-	boost::posix_time::ptime end;
-	boost::posix_time::ptime expectedBegin;
-	boost::posix_time::ptime expectedEnd;
 
 	//-----------------------------------------------------
 	// 2019-05-06 where Icinga celebrates 10 years #monitoringlove