catch error 10045 on stopping SAM acceptor (#1233), fix warning in util

libi2pd/util.cpp

@@ -203,7 +203,9 @@ namespace net
 #endif
 
 		if (IsWindowsXPorLater())
+		{
 			#define inet_pton inet_pton_xp
+		}
 
 		if(localAddress.is_v4())
 		{
@@ -220,7 +222,6 @@ namespace net
 			LogPrint(eLogError, "NetIface: GetMTU(): address family is not supported");
 			return fallback;
 		}
-
 	}
 #else // assume unix
 	int GetMTUUnix(const boost::asio::ip::address& localAddress, int fallback)

libi2pd_client/SAM.cpp

@@ -963,7 +963,16 @@ namespace client
 	void SAMBridge::Stop ()
 	{
 		m_IsRunning = false;
-		m_Acceptor.cancel ();
+
+		try
+		{
+			m_Acceptor.cancel ();
+		}
+		catch (const std::exception& ex)
+		{
+			LogPrint (eLogError, "SAM: runtime exception: ", ex.what ());
+		}
+
 		for (auto& it: m_Sessions)
 			it.second->CloseStreams ();
 		m_Sessions.clear ();