Fix Iterator return types

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/private/IntegrityCheck/Iterator/ExcludeFileByNameFilterIterator.php

@@ -59,10 +59,7 @@ class ExcludeFileByNameFilterIterator extends \RecursiveFilterIterator {
 		'/^\.webapp-nextcloud-(\d+\.){2}(\d+)(-r\d+)?$/', // Gentoo/Funtoo & derivatives use a tool known as webapp-config to manage wep-apps.
 	];
 
-	/**
-	 * @return bool
-	 */
-	public function accept() {
+	public function accept(): bool {
 		/** @var \SplFileInfo $current */
 		$current = $this->current();
 

lib/private/IntegrityCheck/Iterator/ExcludeFoldersByPathFilterIterator.php

@@ -59,10 +59,7 @@ class ExcludeFoldersByPathFilterIterator extends \RecursiveFilterIterator {
 		$this->excludedFolders = array_merge($excludedFolders, $appFolders);
 	}
 
-	/**
-	 * @return bool
-	 */
-	public function accept() {
+	public function accept(): bool {
 		return !\in_array(
 			$this->current()->getPathName(),
 			$this->excludedFolders,

lib/private/L10N/LanguageIterator.php

@@ -45,7 +45,7 @@ class LanguageIterator implements ILanguageIterator {
 	/**
 	 * Rewind the Iterator to the first element
 	 */
-	public function rewind() {
+	public function rewind(): void {
 		$this->i = 0;
 	}
 
@@ -112,7 +112,7 @@ class LanguageIterator implements ILanguageIterator {
 	 *
 	 * @since 14.0.0
 	 */
-	public function next() {
+	public function next(): void {
 		++$this->i;
 	}
 

lib/public/L10N/ILanguageIterator.php

@@ -53,7 +53,9 @@ interface ILanguageIterator extends \Iterator {
 	 * Move forward to next element
 	 *
 	 * @since 14.0.0
+	 * @return void
 	 */
+	#[\ReturnTypeWillChange]
 	public function next();
 
 	/**