Aparently, it need not only be defined but *initialized* to make the warnings go...

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index 99d681f..f243392 100644 (file)
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -793,7 +793,7 @@ class OutputPage {
                }
 
                //If it's a range block, get the range in CIDR and hand it back.
-               $ipRange;
+               $ipRange = '';
                if ($wgUser->mBlock->mRangeStart != $wgUser->mBlock->mRangeEnd) {
                        $ipRange = $wgUser->mBlock->mAddress;
                }