- Fixed warning.

modules/taxonomy.module

@@ -624,6 +624,7 @@ function taxonomy_get_tree($vid, $parent = 0, $depth = -1, $max_depth = NULL) {
   }
 
   $max_depth = (is_null($max_depth)) ? count($children[$vid]) : $max_depth;
+  if ($children[$vid][$parent]) {
     foreach ($children[$vid][$parent] as $child) {
       if ($max_depth > $depth) {
         $terms[$vid][$child]->depth = $depth;
@@ -637,6 +638,7 @@ function taxonomy_get_tree($vid, $parent = 0, $depth = -1, $max_depth = NULL) {
         }
       }
     }
+  }
 
   return $tree ? $tree : array();
 }

modules/taxonomy/taxonomy.module

@@ -624,6 +624,7 @@ function taxonomy_get_tree($vid, $parent = 0, $depth = -1, $max_depth = NULL) {
   }
 
   $max_depth = (is_null($max_depth)) ? count($children[$vid]) : $max_depth;
+  if ($children[$vid][$parent]) {
     foreach ($children[$vid][$parent] as $child) {
       if ($max_depth > $depth) {
         $terms[$vid][$child]->depth = $depth;
@@ -637,6 +638,7 @@ function taxonomy_get_tree($vid, $parent = 0, $depth = -1, $max_depth = NULL) {
         }
       }
     }
+  }
 
   return $tree ? $tree : array();
 }