TT#12905 fix error introduced at 0b49ec43f3

> Global symbol "@tmp" requires explicit package name

Change-Id: I6e589c7d0b962711909217b7cbd2c84645e54bbb

bin/ngcp-create_subscriber

@@ -65,7 +65,7 @@ sub main {
     if ($dom->as_hash->{total_count} == 1) {
         my $tmp = $dom->as_hash->{_embedded}->{'ngcp:domains'};
         if (ref $tmp eq 'ARRAY') {
-            $data{domain_id} = $tmp[0]->{id};
+            $data{domain_id} = @{$tmp}[0]->{id};
         } else {
             $data{domain_id} = $tmp->{id};
         }

bin/ngcp-delete_domain

@@ -59,7 +59,7 @@ sub main {
     if ($dom->as_hash->{total_count} == 1) {
         my $tmp = $dom->as_hash->{_embedded}->{'ngcp:domains'};
         if (ref $tmp eq 'ARRAY') {
-            $dom_id = $tmp[0]->{id};
+            $dom_id = @{$tmp}[0]->{id};
         } else {
             $dom_id = $tmp->{id};
         }

bin/ngcp-terminate_subscriber

@@ -54,7 +54,7 @@ sub main {
     if ($sub->as_hash->{total_count} == 1) {
         my $tmp = $sub->as_hash->{_embedded}->{'ngcp:subscribers'};
         if (ref $tmp eq 'ARRAY') {
-            $sub_id = $tmp[0]->{id};
+            $sub_id = @{$tmp}[0]->{id};
         } else {
             $sub_id = $tmp->{id};
         }