(bug 17864 + bug 19519) - Do input normalization on the username before doing existence/permission checks

RELEASE-NOTES

@@ -390,6 +390,7 @@ this. Was used when mwEmbed was going to be an extension.
   and issue with Opera (bug 18497) where fullscreen mode is assumed to be
   projection mode and the style sheet for screen media is no longer used.
 * (bug 16084) Default memory limit has be increased to 50M, see $wgMemoryLimit
+* (bug 17864/19519) Added proper input normalization in Special:UserRights
 
 == API changes in 1.16 ==
 

includes/specials/SpecialUserrights.php

@@ -54,6 +54,7 @@ class UserrightsPage extends SpecialPage {
 		} else {
 			$this->mTarget = $wgRequest->getVal( 'user' );
 		}
+		$this->mTarget = User::getCanonicalName( $this->mTarget );
 
 		/*
 		 * If the user is blocked and they only have "partial" access