return the expected object

Author: Isaiah Frantz

spec/octocatalog-diff/tests/util/parallel_spec.rb

@@ -39,10 +39,11 @@ def wait_on_me(pid)
           status = nil
           # just in case status never equals anything
           count = 100 
-          while status.nil? or count <= 0
-            status = Process.waitpid(pid, Process::WNOHANG)
+          while status.nil? or count > 0
             count -= 1
+            status = Process.waitpid2(pid, Process::WNOHANG)
           end
+          status
         end
       end