27908 ::gcore breaks sparc build

*** 185,199 ****
  read_gwin(struct ps_prochandle *P, struct rwindow *rwp, uintptr_t sp)
  {
          gwin_query_t gq;
  
          if (P->state == PS_DEAD) {
!                 lwp_info_t *lwp = list_next(&P->core->core_lwp_head);
                  uint_t n;
                  int i;
  
!                 for (n = 0; n < P->core->core_nlwp; n++, lwp = list_next(lwp)) {
                          gwindows_t *gwin = lwp->lwp_gwins;
  
                          if (gwin == NULL)
                                  continue; /* No gwindows for this lwp */
  
--- 185,200 ----
  read_gwin(struct ps_prochandle *P, struct rwindow *rwp, uintptr_t sp)
  {
          gwin_query_t gq;
  
          if (P->state == PS_DEAD) {
!                 core_info_t *core = P->data;
!                 lwp_info_t *lwp = list_next(&core->core_lwp_head);
                  uint_t n;
                  int i;
  
!                 for (n = 0; n < core->core_nlwp; n++, lwp = list_next(lwp)) {
                          gwindows_t *gwin = lwp->lwp_gwins;
  
                          if (gwin == NULL)
                                  continue; /* No gwindows for this lwp */