Export variable in resolver system test

Variable assignment when calling subroutines might not be portable.
Notably, it doesn't work with FreeBSD shell, where the value of HOME
would be ignored in this case.

Since the commands are already executed in a subshell, export the HOME
variable to ensure it is properly handled in all shells.

(cherry picked from commit 86a192cecea5413db85b30fb478cc48986452fe4)

diff --git a/bin/tests/system/resolver/tests.sh b/bin/tests/system/resolver/tests.sh
index f24939e1c34250a58654686ce29eb81785385f7b..322689e116c322afcabed6feb9c526b50e3b29c8 100755 (executable)
--- a/bin/tests/system/resolver/tests.sh
+++ b/bin/tests/system/resolver/tests.sh
@@ -629,9 +629,21 @@ n=$((n + 1))
 echo_i "check that '-t aaaa' in .digrc does not have unexpected side effects ($n)"
 ret=0
 echo "-t aaaa" >.digrc
-(HOME="$(pwd)" dig_with_opts @10.53.0.4 . >dig.out.1.${n}) || ret=1
-(HOME="$(pwd)" dig_with_opts @10.53.0.4 . A >dig.out.2.${n}) || ret=1
-(HOME="$(pwd)" dig_with_opts @10.53.0.4 -x 127.0.0.1 >dig.out.3.${n}) || ret=1
+(
+  HOME="$(pwd)"
+  export HOME
+  dig_with_opts @10.53.0.4 . >dig.out.1.${n}
+) || ret=1
+(
+  HOME="$(pwd)"
+  export HOME
+  dig_with_opts @10.53.0.4 . A >dig.out.2.${n}
+) || ret=1
+(
+  HOME="$(pwd)"
+  export HOME
+  dig_with_opts @10.53.0.4 -x 127.0.0.1 >dig.out.3.${n}
+) || ret=1
 grep ';\..*IN.*AAAA$' dig.out.1.${n} >/dev/null || ret=1
 grep ';\..*IN.*A$' dig.out.2.${n} >/dev/null || ret=1
 grep 'extra type option' dig.out.2.${n} >/dev/null && ret=1