prevent string concatenation for disabled loggers

1 files changed, 2 insertions, 1 deletions

diff --git a/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java b/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
index a2f593ee..7be2400a 100644
--- a/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
+++ b/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
@@ -202,7 +202,8 @@ public class XMPPServer implements AutoCloseable {
             try {
                 connOut.sendStanza(xml);
             } catch (IOException e) {
-                logger.warn("STREAM TO " + connOut.to + " " + connOut.streamID + " ERROR: " + e.toString());
+                logger.warn("STREAM TO {} {} ERROR: {}",
+                        connOut.to, connOut.streamID, e);
             }
             return;
         }