Fix #1212. Try/catch the call to pdflatex at init
Fix #1212. Try/catch the call to pdflatex at init

We call pdflatex at initialization to determine if it comes from MiKTeX.
We silently ignore errors here to enable the use of the extension even
with no LaTeX distribution.

James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop