Minor fixes for correctness

lib/REST/Miniflux/V1.php

@@ -718,7 +718,7 @@ class V1 extends \JKingWeb\Arsse\REST\AbstractHandler {
                 // otherwise we'd be deleting the entire tree
                 $tr = Arsse::$db->begin();
                 foreach (Arsse::$db->subscriptionList(Arsse::$user->id, null, false) as $sub) {
-                    Arsse::$db->subscriptionRemove(Arsse::$user->id, $sub['id']);
+                    Arsse::$db->subscriptionRemove(Arsse::$user->id, (int) $sub['id']);
                 }
                 $tr->commit();
             }

lib/REST/TinyTinyRSS/API.php

@@ -1357,7 +1357,7 @@ class API extends \JKingWeb\Arsse\REST\AbstractHandler {
                     'score'                      => 0, // score is not implemented as it is not modifiable from the TTRSS API
                     'note'                       => strlen((string) $article['note']) ? $article['note'] : null,
                     'lang'                       => "", // FIXME: picoFeed should be able to retrieve this information
-                    'tags'                       => Arsse::$db->articleCategoriesGet(Arsse::$user->id, $article['id']),
+                    'tags'                       => Arsse::$db->articleCategoriesGet(Arsse::$user->id, (int) $article['id']),
                     'comments_count'             => 0,
                     'comments_link'              => "",
                     'always_display_attachments' => false,

tests/cases/REST/TinyTinyRSS/TestAPI.php

@@ -945,6 +945,7 @@ LONG_STRING;
             [['label_id' => -1042, 'caption' => ""],    [$this->userId, 18,   ['name' => ""]],    new ExceptionInput("missing"),             $this->respGood()],
             [['label_id' => -1042, 'caption' => " "],   [$this->userId, 18,   ['name' => " "]],   new ExceptionInput("whitespace"),          $this->respGood()],
             [['label_id' => -1042],                     [$this->userId, 18,   ['name' => ""]],    new ExceptionInput("missing"),             $this->respGood()],
+            [['label_id' => -1042],                     [$this->userId, 18,   ['name' => ""]],    new ExceptionInput("typeViolation"),       $this->respErr("INCORRECT_USAGE")],
             [['label_id' => -1,    'caption' => "Ook"], null,                                     null,                                      $this->respErr("INCORRECT_USAGE")],
             [['caption' => "Ook"],                      null,                                     null,                                      $this->respErr("INCORRECT_USAGE")],
             [[],                                        null,                                     null,                                      $this->respErr("INCORRECT_USAGE")],