io.c: IO#write without args returns 0

This is consistent with other implementations of .write
in openssl and stringio.

* io.c (io_write_m): return 0 on argc == 0
  [ruby-core:86285] [Bug #14338]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index cb24b283d2..ebf5743d37 100644
--- a/io.c
+++ b/io.c
@@ -1678,7 +1678,7 @@ io_writev(int argc, VALUE *argv, VALUE io)
 static VALUE
 io_write_m(int argc, VALUE *argv, VALUE io)
 {
-    if (argc > 1) {
+    if (argc != 1) {
 	return io_writev(argc, argv, io);
     }
     else {