JS: fix error message for 'indexOfMinCol' and 'indexOfMaxCol' functions
JS: fix error message for 'indexOfMinCol' and 'indexOfMaxCol' functions

Fixes a bug that caused a null pointer exception when the collection
contained non-numerical value, e.g. 'indexOfMinCol({1,2,"x"})'.

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim