Set next-error-last-buffer for fixits buffer
Set next-error-last-buffer for fixits buffer

Setting next-error-last-buffer makes it possible to navigate fixits when
another next-error buffer like a compilation buffer is open.

phst/emacs-ycmd,abingham/emacs-ycmd,ptrv/emacs-ycmd,ptrv/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,ptrv/emacs-ycmd,ptrv/emacs-ycmd,phst/emacs-ycmd,emacsmirror/ycmd,phst/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,phst/emacs-ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,phst/emacs-ycmd,phst/emacs-ycmd,abingham/emacs-ycmd,ptrv/emacs-ycmd,ptrv/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd