From 44e452fb3c8cc7a093d72fbc280be3973e627a62 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Fri, 19 Apr 2019 21:26:04 -0400
Subject: Add braces to param exps in arith substs

---
(limited to 'src/fd.sh')

diff --git a/src/fd.sh b/src/fd.sh
index c52efec..345eee6 100644
--- a/src/fd.sh
+++ b/src/fd.sh
@@ -60,7 +60,7 @@ fopen()
 			fd=${i}
 			break
 		fi
-		i=$(($i + 1))
+		i=$((${i} + 1))
 	done
 	if [ "x${fd:+set}" != 'xset' ]; then
 		error "$(get_msg 'emfile')"
--
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