bdlde_crc32c: Fix typo disabling SSE4.2 optimization (#3766)
bdlde_crc32c: Fix typo disabling SSE4.2 optimization (#3766)

This change set fixes a typo that prevented the
SSE4.2-optimized implementation of bdlde_crc32c from
being used.
bloomberg/bde,bloomberg/bde,bloomberg/bde,bloomberg/bde,bloomberg/bde