revert return of getNS to false again

2 files changed, 3 insertions, 3 deletions

diff --git a/inc/io.php b/inc/io.php
index dce676bbb..27a34b045 100644
--- a/inc/io.php
+++ b/inc/io.php
@@ -31,7 +31,7 @@ function io_sweepNS($id,$basedir='datadir'){
     $delone = false;
 
     //scan all namespaces
-    while(($id = getNS($id)) !== ''){
+    while(($id = getNS($id)) !== false){
         $dir = $conf[$basedir].'/'.utf8_encodeFN(str_replace(':','/',$id));
 
         //try to delete dir else return
diff --git a/inc/pageutils.php b/inc/pageutils.php
index 79b703ddc..5f62926e4 100644
--- a/inc/pageutils.php
+++ b/inc/pageutils.php
@@ -152,14 +152,14 @@ function cleanID($raw_id,$ascii=false){
  * @author Andreas Gohr <andi@splitbrain.org>
  *
  * @param string $id
- * @return string
+ * @return string|bool the namespace part or false if the given ID has no namespace (root)
  */
 function getNS($id){
     $pos = strrpos((string)$id,':');
     if($pos!==false){
         return substr((string)$id,0,$pos);
     }
-    return '';
+    return false;
 }
 
 /**