My husband has non-captial losses from last year that could bring his income to 0; this is not making any changes to MY income tax payable...could this be correct?

Correct.  Any claims that you would make with respect to your husband would be based on his "net income" (line 236 of his tax return) whereas a claim by him for non-capital losses from prior years would be made on line 252 of his tax return (after his net income is calculated) to arrive at his taxable income.