clnt_vc_control: Removed a strict-aliasing warning

clnt_vc_control: Removed a strict-aliasing warning

clnt_vc.c:587:7: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
clnt_vc.c:593:7: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
clnt_vc.c:605:7: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
clnt_vc.c:611:7: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

Signed-off-by: Steve Dickson <steved@redhat.com>