Use less constness in MAD code

This suppresses warnings, because sometimes the constness was taken away

1 files changed, 1 insertions, 1 deletions

diff --git a/op.h b/op.h
index e8ba8ef07a..96085640e0 100644
--- a/op.h
+++ b/op.h
@@ -646,7 +646,7 @@ struct loop {
 
 struct madprop {
     MADPROP* mad_next;
-    const void *mad_val;
+    void *mad_val;
     U32 mad_vlen;
 /*    short mad_count; */
     char mad_key;