* transcode.c (rb_econv_open): return NULL on error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18804 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/transcode.c b/transcode.c
index ce3455df0f..5e14a358b8 100644
--- a/transcode.c
+++ b/transcode.c
@@ -780,7 +780,7 @@ rb_econv_open(const char *from, const char *to, int flags)
     ec = rb_econv_open_by_transcoder_entries(num_trans, entries);
     xfree(entries);
     if (!ec)
-        rb_raise(rb_eArgError, "encoding conversion not supported (from %s to %s)", from, to);
+        return NULL;
 
     ec->flags = flags;
     ec->source_encoding_name = from;