diff -r c7c34916027a -r 177826044cd9 wp/wp-admin/includes/class-automatic-upgrader-skin.php
--- a/wp/wp-admin/includes/class-automatic-upgrader-skin.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-admin/includes/class-automatic-upgrader-skin.php	Mon Oct 14 18:28:13 2019 +0200
@@ -50,7 +50,6 @@
 	}
 
 	/**
-	 *
 	 * @return array
 	 */
 	public function get_upgrade_messages() {
@@ -58,7 +57,6 @@
 	}
 
 	/**
-	 *
 	 * @param string|array|WP_Error $data
 	 */
 	public function feedback( $data ) {
@@ -69,30 +67,36 @@
 		} else {
 			$string = $data;
 		}
-		if ( ! empty( $this->upgrader->strings[ $string ] ) )
+		if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
 			$string = $this->upgrader->strings[ $string ];
+		}
 
 		if ( strpos( $string, '%' ) !== false ) {
 			$args = func_get_args();
 			$args = array_splice( $args, 1 );
-			if ( ! empty( $args ) )
+			if ( ! empty( $args ) ) {
 				$string = vsprintf( $string, $args );
+			}
 		}
 
 		$string = trim( $string );
 
 		// Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.
-		$string = wp_kses( $string, array(
-			'a' => array(
-				'href' => true
-			),
-			'br' => true,
-			'em' => true,
-			'strong' => true,
-		) );
+		$string = wp_kses(
+			$string,
+			array(
+				'a'      => array(
+					'href' => true,
+				),
+				'br'     => true,
+				'em'     => true,
+				'strong' => true,
+			)
+		);
 
-		if ( empty( $string ) )
+		if ( empty( $string ) ) {
 			return;
+		}
 
 		$this->messages[] = $string;
 	}
@@ -107,7 +111,8 @@
 	 */
 	public function footer() {
 		$output = ob_get_clean();
-		if ( ! empty( $output ) )
+		if ( ! empty( $output ) ) {
 			$this->feedback( $output );
+		}
 	}
 }