fixed auth method prefix extra / char

examples/libev.cpp

@@ -65,7 +65,8 @@ int main()
     MyHandler handler(loop);
     
     // make a connection
-    AMQP::TcpConnection connection(&handler, AMQP::Address("amqp://guest:guest@localhost/"));
+    AMQP::Address address("amqps://guest:guest@localhost/");
+    AMQP::TcpConnection connection(&handler, address);
         
     // we need a channel too
     AMQP::TcpChannel channel(&connection);

include/amqpcpp/address.h

@@ -73,7 +73,7 @@ public:
         else throw std::runtime_error("AMQP address should start with \"amqp://\" or \"amqps://\"");
 
         // begin of the string was parsed
-        data += 7;
+        data += _authmethod.length();
 
         // do we have a '@' to split user-data and hostname?
         const char *at = (const char *)memchr(data, '@', last - data);