Tests: Make nag work

Note to self:
Even the most trivial change needs to be tested for idiocy.

test/run_all.in

@@ -55,7 +55,7 @@ run_all_parallel() {
   rm _run_all_parallel.txt
 }
 
-if [ ! -z "$1" ] && [ "$1" -ne "--verbose" ] && [ "$1" -ne "--fast" ];
+if [ ! -z "$1" ] && [ "$1" != "--verbose" ] && [ "$1" != "--fast" ];
 then
   echo "Did you mean --fast or --verbose?"
   exit 1