Invoking waitForStarted() on a QProcess before or after an unsuccessful
call to start() (e.g., with an empty command), would execute FD_SET with
an invalid file descriptor and cause the process to abort.
The bug can be reliably reproduced on OSX.
Task-number: QTBUG-32958
Change-Id: Id25b7781168489281645e21571361ca1a71d43e3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
c8d9b17367