Out of memory on SmSdetector

Created by: agilob

Last time I did code review I pointed a memory leak in SmsDetector, apparently it wasn't fixed yet despite good commit from @smarek and second approach from @banjaxbanjo So this time I have a proof that there is memory leak :>

java.lang.OutOfMemoryError
    at java.lang.String.<init>(String.java:422)
    at java.io.BufferedReader.readLine(BufferedReader.java:363)
    at com.secupwn.aimsicd.smsdetection.SmsDetector.run(SmsDetector.java:166)

I got this while AIMSICD was left open and phone charging.