-Fix (r26747) [FS#6093]: Silence MSVC warning.

git-svn-id: http://svn.openttd.org/trunk@26755 6aa0318a-3be1-0310-93fa-89fd2396df07
-Fix (r26747): Ground vehicle breakdown smoke was not supposed to be available yet, since it is a looping animation.

git-svn-id: http://svn.openttd.org/trunk@26756 6aa0318a-3be1-0310-93fa-89fd2396df07