Correct error msg for sub:lvalue{%h{k}} in sassign

This:

    sub foo : lvalue { %hash{'key'} }
    foo = 3;

was incorrectly giving ‘Can't modify key/value hash slice in list
assignment’.  There is no list assignment there.

1 files changed, 2 insertions, 1 deletions

diff --git a/pp.c b/pp.c
index 5010065ab9..b37c3652a5 100644
--- a/pp.c
+++ b/pp.c
@@ -5158,7 +5158,8 @@ PP(pp_kvhslice)
        if (flags) {
            if (!(flags & OPpENTERSUB_INARGS))
                /* diag_listed_as: Can't modify %s in %s */
-	       Perl_croak(aTHX_ "Can't modify key/value hash slice in list assignment");
+	       Perl_croak(aTHX_ "Can't modify key/value hash slice in %s assignment",
+				 GIMME_V == G_ARRAY ? "list" : "scalar");
 	   lval = flags;
        }
     }