move and rename cx_old_savestack_ix

Earlier on in this branch I temporarily added cx_old_savestack_ix
as the first element in the context struct. This commit moves it down
32 bits so it now follows type/gimme/u16 in the sbu and blku unions.

This means that type is now back as the first item in the struct.

I've also renamed it blku_oldsaveix to be more in keeping with similar
field names.

1 files changed, 1 insertions, 1 deletions

diff --git a/pp_sort.c b/pp_sort.c
index 5ccdacaf08..a95796d01c 100644
--- a/pp_sort.c
+++ b/pp_sort.c
@@ -1691,7 +1691,7 @@ PP(pp_sort)
 
 		}
 	    }
-            cx->cx_old_savestack_ix = old_savestack_ix;
+            cx->blk_oldsaveix = old_savestack_ix;
 
 	    start = p1 - max;
 	    sortsvp(aTHX_ start, max,