YJIT: Fix incorrect exit in splat (#7575)

So by itself, this shouldn't have been a correctness issue, but we
also pop the stack for block_args. Doing stack manipulation like that
and then side-exiting causes issues. So, while this fixes the
immediate failure, we have a bigger issue with block_args popping and
then exiting that we need to deal with.

1 files changed, 1 insertions, 1 deletions

diff --git a/yjit/src/codegen.rs b/yjit/src/codegen.rs
index d0fd439264..824415346e 100644
--- a/yjit/src/codegen.rs
+++ b/yjit/src/codegen.rs
@@ -5708,7 +5708,7 @@ fn gen_send_iseq(
             unsafe { rb_yjit_array_len(array) as u32}
         };
 
-        if opt_num == 0 && required_num != array_length as i32 {
+        if opt_num == 0 && required_num != array_length as i32 + argc - 1 {
             gen_counter_incr!(asm, send_iseq_splat_arity_error);
             return CantCompile;
         }