Do not fork the process on --mjit-wait

fork is for parallel compilation, but --mjit-wait cancels it.
It's more useful to not fork it for binding.irb, debugging, etc.

1 files changed, 1 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index b271128193..c42c79914d 100644
--- a/thread.c
+++ b/thread.c
@@ -2323,7 +2323,7 @@ rb_threadptr_execute_interrupts(rb_thread_t *th, int blocking_timing)
             // outside ruby_sigchld_handler to avoid recursively relying on the SIGCHLD handler.
             if (mjit_waitpid_finished) {
                 mjit_waitpid_finished = false;
-                mjit_notify_waitpid(mjit_waitpid_status);
+                mjit_notify_waitpid(WIFEXITED(mjit_waitpid_status) ? WEXITSTATUS(mjit_waitpid_status) : -1);
             }
 #endif
         }