Fixes gcc warning:

cmsColNm.c: In function 'FirstCmp':
cmsColNm.c:257:20: warning: cast discards '__attribute__((const))' qualifier from pointer target type [-Wcast-qual]
cmsColNm.c:257:45: warning: cast discards '__attribute__((const))' qualifier from pointer target type [-Wcast-qual]
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>