Bug 58221: don't use strlen to check if a string is of length 0.
Bug 58221: don't use strlen to check if a string is of length 0.

ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss