(initialize): return void.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@156 72102866-910b-0410-8b05-ffd578937521

Source/RBTree.m

@@ -33,7 +33,7 @@ static id nilRBNode;
 
 @implementation RBTree
 
-+ initialize
++ (void) initialize
 {
   if (self == [RBTree class])
     {
@@ -41,7 +41,6 @@ static id nilRBNode;
       nilRBNode = [[RBTreeNode alloc] init];
       [nilRBNode setBlack];
     }
-  return self;
 }
 
 - nilNode

Source/SplayTree.m

@@ -26,11 +26,10 @@
 
 @implementation SplayTree
 
-+ initialize
++ (void) initialize
 {
   if (self == [SplayTree class])
     [self setVersion:0];	/* beta release */
-  return self;
 }
 
 /* Make this a function ? */