fixed some typos

src/ip_voter.cpp

@@ -33,6 +33,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/ip_voter.hpp"
 #include "libtorrent/broadcast_socket.hpp" // for is_any() etc.
 #include "libtorrent/socket_io.hpp" // for hash_address
+#include "libtorrent/random.hpp" // for random()
 
 #include <boost/bind.hpp>
 

src/session_impl.cpp

@@ -6096,7 +6096,7 @@ retry:
 			, source_type, print_address(source).c_str());
 #endif
 
-		if (!m_external_ip.cast_vote(ip, source_type, source));
+		if (!m_external_ip.cast_vote(ip, source_type, source)) return;
 
 #if defined TORRENT_VERBOSE_LOGGING
 		session_log("  external IP updated");