Fix shellcheck warnings in newly imported __unbound type

type/__unbound/files/unbound.conf.sh

@@ -7,7 +7,7 @@ generate_interface() {
 }
 
 generate_access_control() {
-  echo "$ACCESS_CONTROLS" | while read entry; do
+  echo "$ACCESS_CONTROLS" | while read -r entry; do
     echo "	access-control: $entry"
   done
 }
@@ -983,12 +983,12 @@ $(generate_forward_addr)
 # 1. the keys/certs cannot be produced by unbound. You can use dnscrypt-wrapper
 #   for this: https://github.com/cofyc/dnscrypt-wrapper/blob/master/README.md#usage
 # 2. dnscrypt channel attaches to an interface. you MUST set interfaces to
-#   listen on `dnscrypt-port` with the follo0wing snippet:
+#   listen on 'dnscrypt-port' with the follo0wing snippet:
 # server:
 #     interface: 0.0.0.0@443
 #     interface: ::0@443
 #
-# Finally, `dnscrypt` config has its own section.
+# Finally, 'dnscrypt' config has its own section.
 # dnscrypt:
 #     dnscrypt-enable: yes
 #     dnscrypt-port: 443

type/__unbound/manifest

@@ -33,16 +33,20 @@ case "$os" in
 esac
 
 # Required parameters:
-export DNS64_PREFIX=$(cat "$__object/parameter/dns64_prefix")
-export FORWARD_ADDRS=$(cat "$__object/parameter/forward_addr")
+DNS64_PREFIX=$(cat "$__object/parameter/dns64_prefix")
+export DNS64_PREFIX
+FORWARD_ADDRS=$(cat "$__object/parameter/forward_addr")
+export FORWARD_ADDRS
 
 # Optional parameters:
 if [ -f "$__object/parameter/interface" ]; then
-   export INTERFACES=$(cat "$__object/parameter/interface")
+   INTERFACES=$(cat "$__object/parameter/interface")
+   export INTERFACES
 fi
 
 if [ -f "$__object/parameter/access_control" ]; then
-   export ACCESS_CONTROLS=$(cat "$__object/parameter/access_control")
+   ACCESS_CONTROLS=$(cat "$__object/parameter/access_control")
+   export ACCESS_CONTROLS
 fi
 
 # Boolean parameters:
@@ -69,9 +73,9 @@ source_file="$__object/files/unbound.conf"
 target_file="/etc/unbound/unbound.conf"
 
 mkdir -p "$__object/files"
-"$__type/files/unbound.conf.sh" > $source_file
-require="__package/unbound" __file $target_file \
-    --source $source_file \
+"$__type/files/unbound.conf.sh" > "$source_file"
+require="__package/unbound" __file "$target_file" \
+    --source "$source_file" \
     --owner root \
     --mode 644