miss a `break` in for loop.

Add one line `break` for leaving for loop, and indent other lines.


```objc
for (int i = 1, iter = 1; i < (int)pow(2,10); i <<= 1, iter++) {

    if (logMessage->logFlag & i) {

        nsloggerLogLevel = iter - 1;
        break; /****** add here *****/
    }
}
````