[LTP] [PATCH] fs/binfmt_misc02.sh: Fix local variable assignment for dash

[Xiao Yang]

Only the first one can be accepted if more than one string are assigned
to local valiable.  For example, only "This" is assigned to $string:
------------------------------------
tstring="This is test for extension"
...
local string=$tstring
------------------------------------

We add a pair of quotes to fix the issue now. Besides we can also fix
the issue by splitting declaration and assignment(e.g. local string &
string=$tstring).

See the explanation from:
https://wiki.ubuntu.com/DashAsBinSh#local

Fixes: #601
Reported-by: limingyu <limingyu@deepin.com>
Suggested-by: limingyu <limingyu@deepin.com>
Signed-off-by: Xiao Yang <ice_yangxiao@163.com>
---
 testcases/kernel/fs/binfmt_misc/binfmt_misc02.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/fs/binfmt_misc/binfmt_misc02.sh b/testcases/kernel/fs/binfmt_misc/binfmt_misc02.sh
index 8d0ecd895..9dbcd68cc 100755
--- a/testcases/kernel/fs/binfmt_misc/binfmt_misc02.sh
+++ b/testcases/kernel/fs/binfmt_misc/binfmt_misc02.sh
@@ -26,7 +26,7 @@ TST_NEEDS_CMDS="which cat head"
 recognised_unrecognised()
 {
 	local file=$1
-	local string=$2
+	local string="$2"
 
 	eval $file >temp 2>&1
 	if [ $? -ne 0 ] || ! grep -q "$string" temp; then
@@ -52,7 +52,7 @@ recognised_unrecognised()
 unrecognised()
 {
 	local file=$1
-	local string=$2
+	local string="$2"
 
 	eval $file >temp 2>&1
 	if [ $? -eq 0 ] || grep -q "$string" temp; then
-- 
2.21.0