Update the wrong variable used in rb20 function. Fixes #1762
Update the wrong variable used in rb20 function. Fixes #1762

Signed-off-by: Joni Chandra <5f524cb7566adfe4ca894e2e86ded6a23ee9b4d6@gmail.com>

ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh