Prefer to use RTEST when checking result of `rb_io_wait`. (#5341)

* Prefer to use RTEST when checking result of `rb_io_wait`.

* Consistently use false for signifying no events ready.

2 files changed, 2 insertions, 2 deletions

diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index 5dec1a4c06..4c5f89f80d 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -556,7 +556,7 @@ console_getch(int argc, VALUE *argv, VALUE io)
 	    if (!(w & RB_WAITFD_IN)) return Qnil;
 # else
 	    VALUE result = rb_io_wait(io, RUBY_IO_READABLE, timeout);
-	    if (result == Qfalse) return Qnil;
+	    if (!RTEST(result)) return Qnil;
 # endif
 	}
 	else if (optp->vtime) {
diff --git a/io.c b/io.c
index f104ff5371..4ed4ee34f8 100644
--- a/io.c
+++ b/io.c
@@ -1483,7 +1483,7 @@ rb_io_maybe_wait(int error, VALUE io, VALUE events, VALUE timeout)
 
       default:
         // Non-specific error, no event is ready:
-        return RB_INT2NUM(0);
+        return Qfalse;
     }
 }