Royal Bank of Scotland Group PLC (NYSE: RBS ) posted a wider full-year net loss. RBS posted its revenue of GBP25.79 billion, versus GBP27.71 billion in 2011. It's net loss widened to GBP5.97 billion, versus a year-ago loss of GBP2 billion. RBS shares closed at $10.64 yesterday. (c) 2013 Benzinga.com. Benzinga does