Minor tweaks to specific error conditions

src/channel/channel.js

@@ -320,9 +320,12 @@ Channel.prototype.checkModules = function (fn, args, cb) {
 
             if (!self.modules) {
                 LOGGER.warn(
-                    'checkModules(%s): self.modules is undefined; dead=%s',
+                    'checkModules(%s): self.modules is undefined; dead=%s,' +
+                    ' current=%s, remaining=%s',
                     fn,
-                    self.dead
+                    self.dead,
+                    m,
+                    keys
                 );
                 return;
             }

src/user.js

@@ -243,17 +243,11 @@ User.prototype.setAFK = function (afk) {
     }
 
     if (!this.inChannel()) {
-        // I haven't exactly nailed down why this.channel can
-        // become null halfway through the function, but based
-        // on log analysis I suspect it's because this.socket.emit()
-        // can fire the "disconnect" event which then tears down
-        // the User object.
-        LOGGER.warn(
-            "Encountered this.channel == null from setAFK.  " +
-            "this.dead=%t this.flags=%b",
-            this.dead,
-            this.flags
-        );
+        /*
+         * In unusual circumstances, the above emit("clearVoteskipVote")
+         * can cause the "disconnect" event to be fired synchronously,
+         * which results in this user no longer being in the channel.
+         */
         return;
     }