Revert "Avoid hash allocation for certain proc calls"

This reverts commit abc04e898b627ab37fa9dd5e330f239768778d8b.

This caused problems in a Rails test.

1 files changed, 1 insertions, 3 deletions

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 227bfa2004..4ce72ea81f 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -2739,11 +2739,9 @@ vm_caller_setup_keyword_hash(const struct rb_callinfo *ci, VALUE keyword_hash)
             keyword_hash = rb_hash_dup(rb_to_hash_type(keyword_hash));
         }
     }
-    else if (!IS_ARGS_KW_SPLAT_MUT(ci) && !RHASH_EMPTY_P(keyword_hash)) {
+    else if (!IS_ARGS_KW_SPLAT_MUT(ci)) {
         /* Convert a hash keyword splat to a new hash unless
          * a mutable keyword splat was passed.
-         * Skip allocating new hash for empty keyword splat, as empty
-         * keyword splat will be ignored by both callers.
          */
         keyword_hash = rb_hash_dup(keyword_hash);
     }