AndrewRadev/linediff.vim — pull request #8 by xaizek (2013-08-17 14:08:51+00:00)
Title: Prevent :LinediffReset command from failing if plugin is uninitialized

Don't try to reset anything if nothing is initialized.

The issue can be reproduced by running `:LinediffReset` command before `:Linediff` in Vim's session, in which case I got:
```
Error detected while processing function 41_LinediffReset:
line 1:
E121: Undefined variable: s:differ_one
line 2:
E121: Undefined variable: s:differ_two
```