From 9f0f04769f5906a33a268aa79f1420b11c8528ac Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Mon, 18 Aug 2014 20:18:49 +0000
Subject: [PATCH] Bugfix: b58tobin: Correct zeromask for multiple-of-four
 binary buffer sizes

---
 base58.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base58.c b/base58.c
index d50f582..998a802 100644
--- a/base58.c
+++ b/base58.c
@@ -40,7 +40,7 @@ bool b58tobin(void *bin, size_t *binszp, const char *b58, size_t b58sz)
 	uint32_t c;
 	size_t i, j;
 	uint8_t bytesleft = binsz % 4;
-	uint32_t zeromask = ~((1 << ((bytesleft) * 8)) - 1);
+	uint32_t zeromask = ~((1 << ((bytesleft ?: 4) * 8)) - 1);
 	unsigned zerocount = 0;
 	
 	if (!b58sz)