substr() assumes utf8 without say-so

	Message-Id: <199808071925.MAA13436@wall.org>
	Subject: [PATCH 5.005_50] substr bug?

p4raw-id: //depot/perl@1768

1 files changed, 2 insertions, 0 deletions

diff --git a/pp.c b/pp.c
index 2d2aa4c25e..3accab2d8c 100644
--- a/pp.c
+++ b/pp.c
@@ -1839,6 +1839,8 @@ PP(pp_substr)
 	else
 	    curlen = utfcurlen;
     }
+    else
+	utfcurlen = 0;
 
     if (pos >= arybase) {
 	pos -= arybase;