Ticket #19510: 19510.diff

wp-includes/functions.wp-styles.php

@@ -18 +18 @@
  * @return bool True on success, false on failure.
  */
 function wp_print_styles( $handles = false ) {
-        do_action( 'wp_print_styles' );
         if ( '' === $handles ) // for wp_head
                 $handles = false;
 
+        if ( ! $handles )
+                do_action( 'wp_print_styles' );
+
         global $wp_styles;
         if ( ! is_a( $wp_styles, 'WP_Styles' ) ) {
                 if ( ! did_action( 'init' ) )