fix bad readed code

Author: vitaliylag

lib/extendedApi.js

@@ -43,18 +43,18 @@ RedisClient.prototype.send_command = RedisClient.prototype.sendCommand = functio
     }
 
     // Using the raw multi command is only possible with this function
-    // If the command is not yet added to the client, the internal function should be called right away
-    // Otherwise we need to redirect the calls to make sure the internal functions don't get skipped
+    // If the command is added to the client we need to redirect the calls to make sure the internal functions don't get skipped
+    // Otherwise we should call internal_send_command
     // The internal functions could actually be used for any non hooked function
     // but this might change from time to time and at the moment there's no good way to distinguishe them
     // from each other, so let's just do it do it this way for the time being
-    if (command === 'multi' || typeof this[command] !== 'function') {
-        return this.internal_send_command(new Command(command, args, callback));
-    }
-    if (typeof callback === 'function') {
-        args = args.concat([callback]); // Prevent manipulating the input array
+    if (typeof this[command] === 'function' && command !== 'multi') {
+        if (typeof callback === 'function') {
+            args = args.concat([callback]); // Prevent manipulating the input array
+        }
+        return this[command].apply(this, args);
     }
-    return this[command].apply(this, args);
+    return this.internal_send_command(new Command(command, args, callback));
 };
 
 RedisClient.prototype.end = function (flush) {