HTTP API: Protect against hex interpretation.

Return earlier from wp_http_validate_url().

Props: iandunn, xknown, voldemortensen, whyisjake.

Built from https://develop.svn.wordpress.org/trunk@46475


git-svn-id: http://core.svn.wordpress.org/trunk@46273 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/http.php

@@ -550,7 +550,7 @@ function wp_http_validate_url( $url ) {
 		} else {
 			$ip = gethostbyname( $host );
 			if ( $ip === $host ) { // Error condition for gethostbyname()
-				$ip = false;
+				return false;
 			}
 		}
 		if ( $ip ) {

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-beta3-46474';
+$wp_version = '5.3-beta3-46475';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.