Fix NPE in o.b.c.Utils runtime and os detection
Fix NPE in o.b.c.Utils runtime and os detection

If getProperty returns null calling toLowerCase results in NPE. Instead
we’ll use a default value and check for .equals(“”) in the following if.

Signed-off-by: HashEngineering <cdfd0e2929fd184ec34228d20f211727fcb487d4@gmail.com>

HashEngineering/darkcoinj,HashEngineering/darkcoinj,HashEngineering/dashj,HashEngineering/dashj,HashEngineering/dashj,HashEngineering/dashj,HashEngineering/darkcoinj