suppress warnings

* ext/-test-/postponed_job/postponed_job.c (pjob_register),
  (pjob_call_direct): none void function.

* ext/-test-/tracepoint/tracepoint.c (tracepoint_track_objspace_events):
  adjust type to get rid of implicit cast.

* ext/objspace/object_tracing.c (newobj_i): ditto.

* ext/tk/tkutil/tkutil.c (tk_conv_args): adjust type against
  RHASH_SIZE().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_method.rb: fix for direct invocation

* test/ruby/test_method.rb (TestMethod#test___dir__): use aboslute
  path for the case invoked directly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40966 b2dd03c8-39d4-4d8f-98ff-823fe69b080e