In `get_avatar()`, revert the `<img>` tag attributes to using single quotes, instead of double quotes. This behaviour was changed in [31107], but caused problems for code that attempted to parse the `<img>` tag.

See #21195


Built from https://develop.svn.wordpress.org/trunk@31152


git-svn-id: http://core.svn.wordpress.org/trunk@31133 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/pluggable.php

@@ -2181,7 +2181,7 @@ function get_avatar( $id_or_email, $size = 96, $default = '', $alt = '', $args =
 	}
 
 	$avatar = sprintf(
-		'<img alt="%s" src="%s" class="%s" height="%d" width="%d" />',
+		"<img alt='%s' src='%s' class='%s' height='%d' width='%d' />",
 		esc_attr( $args['alt'] ),
 		esc_url( $url ),
 		esc_attr( join( ' ', $class ) ),

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31151';
+$wp_version = '4.2-alpha-31152';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.