Merge "Collapse superfluous isset() call"

diff --combined includes/Setup.php
index 1a44d6d,81a120b..c60311f
--- 1/includes/Setup.php
--- 2/includes/Setup.php
+++ b/includes/Setup.php
@@@ -119,8 -119,7 +119,7 @@@ if ( $wgRightsIcon ) 
        );
  }
  
- if ( isset( $wgFooterIcons['copyright'] )
-       && isset( $wgFooterIcons['copyright']['copyright'] )
+ if ( isset( $wgFooterIcons['copyright']['copyright'] )
        && $wgFooterIcons['copyright']['copyright'] === []
  ) {
        if ( $wgRightsIcon || $wgRightsText ) {
@@@ -129,6 -128,8 +128,6 @@@
                        'src' => $wgRightsIcon,
                        'alt' => $wgRightsText,
                ];
 -      } else {
 -              unset( $wgFooterIcons['copyright']['copyright'] );
        }
  }