6811267: Fix for 6809798 broke linux build

Summary: Fix method's declaration.
Reviewed-by: phh, twisti

hotspot/src/share/vm/opto/block.hpp

@@ -347,7 +347,7 @@ class PhaseCFG : public Phase {
   // Helper function to insert a node into a block
   void schedule_node_into_block( Node *n, Block *b );
 
-  void PhaseCFG::replace_block_proj_ctrl( Node *n );
+  void replace_block_proj_ctrl( Node *n );
 
   // Set the basic block for pinned Nodes
   void schedule_pinned_nodes( VectorSet &visited );