[FS] read tunnels configs which ends with .conf only

Signed-off-by: R4SAS <r4sas@i2pmail.org>

libi2pd_client/ClientContext.cpp

@@ -490,6 +490,7 @@ namespace client
 			{
 				for (auto& it: files)
 				{
+					if (it.substr(it.size() - 5) != ".conf") continue; // skip files which not ends with ".conf"
 					LogPrint(eLogDebug, "Clients: tunnels extra config file: ", it);
 					ReadTunnels (it, numClientTunnels, numServerTunnels);
 				}