bnext mapping is clashing with coffescript syntax check

[dre-hh]

In the following pull request 2 buffer mapping were introduced
https://github.com/amix/vimrc/pull/136/files

Unfortiantely there is already an l mapping which overrides the buffer mappings

vimrc/vimrcs/plugins_config.vim

Line 143 in 5f6aa8f

nnoremap <silent> <leader>l :call SyntasticCheckCoffeescript()<cr>

When i press l on a random non-coffee file it will just create a new buffer with same content.

[Tiande]

I had this conflict even in .coffee files.
It's easy to solve if we just remapping it.

[amix]

Remapped to <leader>c

Thank you!