Revert part of cb4a9c5

Changes to lib/riak/node/console.rb made a mistake about whether to use
invalid pipes.

lib/riak/node/console.rb

@@ -34,13 +34,16 @@ def initialize(pipedir, nodename)
         @prompt = /\(#{Regexp.escape(nodename)}\)\d+>\s*/
         pipedir = Pathname(pipedir)
         pipedir.children.each do |path|
-          debug "Non-pipe found! #{path}" unless path.pipe?
-          if path.fnmatch("*.r") # Read pipe
-            # debug "Found read pipe: #{path}"
-            @rfile ||= path
-          elsif path.fnmatch("*.w") # Write pipe
-            # debug "Found write pipe: #{path}"
-            @wfile ||= path
+          if path.pipe?
+            if path.fnmatch("*.r") # Read pipe
+              # debug "Found read pipe: #{path}"
+              @rfile ||= path
+            elsif path.fnmatch("*.w") # Write pipe
+              # debug "Found write pipe: #{path}"
+              @wfile ||= path
+            end
+          else
+            debug "Non-pipe found! #{path}"
           end
         end
         raise ArgumentError, t('no_pipes', :path => pipedir.to_s) if [@rfile, @wfile].any? {|p| p.nil? }