meta: Update run_demo.sh

- Allow more than one argument to nac3standalone executable
- Abort linking process if standalone executable exits with error

nac3standalone/demo/run_demo.sh

@@ -15,6 +15,6 @@ else
 fi
 
 rm -f *.o
-$nac3standalone $1
-rustc -o demo demo.rs -Crelocation-model=static -Clink-arg=./module.o
+$nac3standalone "$@" || exit $?
+rustc -o demo demo.rs -Crelocation-model=static -Clink-arg=./module.o || exit $?
 ./demo