revert unnecessary changes in main.js

libjsqrc/main.js

@@ -418,8 +418,10 @@
     };
 
     Filter.prototype.trigger = function(messages) {
-        for(var i = 0; i < this.callbacks.length; i++) {
-            this.callbacks[i].call(this, messages);
+        if (!(messages instanceof Array) || messages.length) {
+            for(var i = 0; i < this.callbacks.length; i++) {
+                this.callbacks[i].call(this, messages);
+            }
         }
     };
 
@@ -448,7 +450,7 @@
         if(data._id) {
             var cb = web3._callbacks[data._id];
             if (cb) {
-                cb.call(this, data.error, data.data)
+                cb.call(this, data.error, data.data);
                 delete web3._callbacks[data._id];
             }
         }