Remove extraneous spaces. Props kenan3008, dimadin. fixes #19501 #19433

git-svn-id: https://develop.svn.wordpress.org/trunk@19596 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/capabilities.php

@@ -487,10 +487,15 @@ class WP_User {
 	static function get_data_by( $field, $value ) {
 		global $wpdb;
 
-		if ( 'id' == $field )
+		if ( 'id' == $field ) {
+			// Make sure the value is numeric to avoid casting objects, for example,
+			// to int 1.
+			if ( ! is_numeric( $value ) )
+				return false;
 			$value = absint( $value );
-		else
+		} else {
 			$value = trim( $value );
+		}
 
 		if ( !$value )
 			return false;