rename op_aux field from 'size' to 'ssize'

This part of the op_aux union was added for OP_MULTICONCAT; its actually
of type SSize_t, so rename it to ssize to better reflect that it's signed.

This should make no functional difference.

1 files changed, 1 insertions, 1 deletions

diff --git a/op.h b/op.h
index 513fc655fd..eb62c946fc 100644
--- a/op.h
+++ b/op.h
@@ -189,7 +189,7 @@ typedef union  {
     IV        iv;
     UV        uv;
     char      *pv;
-    SSize_t   size;
+    SSize_t   ssize;
 } UNOP_AUX_item;
 
 #ifdef USE_ITHREADS