objspace_dump.c: indent

* ext/objspace/objspace_dump.c: adjust indent.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
objspace_dump.c: suppress warnings

* ext/objspace/objspace_dump.c (dump_object): remove unused variables,
  and cast size_t to long.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43606 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
objspace_dump.c: extract output option utilities

* ext/objspace/objspace_dump.c (dump_output, dump_result): extract
  output option utility functions from objspace_dump() and
  objspace_dump_all().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43607 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
objspace_dump.c: fix portability issue

* ext/objspace/objspace_dump.c (dump_output): fix portability issue.
  mkstemp() may not be available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43608 b2dd03c8-39d4-4d8f-98ff-823fe69b080e