From 5fa80c8aaa7dc70d614fda3e8b9d10402832185c Mon Sep 17 00:00:00 2001
From: "Xianwu.Xue" <Xianwu.Xue@noaa.gov>
Date: Wed, 6 Apr 2022 21:06:04 -0400
Subject: [PATCH] Initialize "err" to avoid potential task fail

If not initialize err, and change "set -x" to "set -xue",
    then the waveinit task will fail with error message:
    "line 234: err: unbound variable"

 On branch bugfix/issue_714
 Changes to be committed:
	modified:   scripts/exgfs_wave_init.sh
Refs: #714
---
 scripts/exgfs_wave_init.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/exgfs_wave_init.sh b/scripts/exgfs_wave_init.sh
index 536ff65d54..ec3e9443b2 100755
--- a/scripts/exgfs_wave_init.sh
+++ b/scripts/exgfs_wave_init.sh
@@ -29,6 +29,8 @@
 # 0.a Basic modes of operation
 
   set -x
+
+  err=0
   # Use LOUD variable to turn on/off trace.  Defaults to YES (on).
   export LOUD=${LOUD:-YES}; [[ $LOUD = yes ]] && export LOUD=YES
   [[ "$LOUD" != YES ]] && set +x