Restore typehinting docblocks

Author: itamargiv

src/Snak/SnakList.php

@@ -208,6 +208,9 @@ private function getNewOffset() {
 	 */
 	public function offsetUnset( $index ) {
 		if ( $this->offsetExists( $index ) ) {
+			/**
+			 * @var Snak $element
+			 */
 			$element = $this->offsetGet( $index );
 			$hash = $element->getHash();
 			unset( $this->offsetHashes[$hash] );

tests/unit/ReferenceListTest.php

@@ -367,6 +367,9 @@ public function testGetValueHashIsTheSameForClone( ReferenceList $array ) {
 	public function testHasReferenceHash( ReferenceList $references ) {
 		$this->assertFalse( $references->hasReferenceHash( '~=[,,_,,]:3' ) );
 
+		/**
+		 * @var Reference $reference
+		 */
 		foreach ( $references as $reference ) {
 			$this->assertTrue( $references->hasReferenceHash( $reference->getHash() ) );
 		}