fix return code for non-unix platforms
fix return code for non-unix platforms

jmarshallnz/gummi,jmarshallnz/gummi,jmarshallnz/gummi,tonyolag/gummi-vim,tonyolag/gummi-vim,tonyolag/gummi-vim,tonyolag/gummi-vim,jmarshallnz/gummi