use context field

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelClient.java

@@ -8,7 +8,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.StringTokenizer;
 
-import net.i2p.I2PAppContext;
 import net.i2p.client.streaming.I2PSocket;
 import net.i2p.data.DataFormatException;
 import net.i2p.data.Destination;
@@ -110,7 +109,7 @@ public class I2PTunnelClient extends I2PTunnelClientBase {
         }
         if (size == 1) // skip the rand in the most common case
             return dests.get(0);
-        int index = I2PAppContext.getGlobalContext().random().nextInt(size);
+        int index = _context.random().nextInt(size);
         return dests.get(index);
     }
 }

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelConnectClient.java

@@ -146,7 +146,7 @@ public class I2PTunnelConnectClient extends I2PTunnelClientBase implements Runna
             int size = _proxyList.size();
             if (size <= 0)
                 return null;
-            int index = I2PAppContext.getGlobalContext().random().nextInt(size);
+            int index = _context.random().nextInt(size);
             return _proxyList.get(index);
         }
     }