fix a typo and indent with tab instead of spaces

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
parse.y: mrhs_arg

* parse.y (mrhs_arg): reduce duplicated code.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40213 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (rb_ll2big): Don't overflow on signed integer negation.

* ext/bigdecimal/bigdecimal.c (MUL_OVERFLOW_SIGNED_VALUE_P): New
  macro.
  (AddExponent): Don't overflow on signed integer multiplication.
  (VpCtoV): Don't overflow on signed integer arithmetic.
  (VpCtoV): Don't overflow on signed integer arithmetic.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40214 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.c (VpCtoV): Initialize a local variable
  even when overflow.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/fiddle/closure.c (initialize): check mprotect's return value.
  If mprotect is failed because of PaX or something, its function call
  will cause SEGV.
  http://c5664.rubyci.org/~chkbuild/ruby-trunk/log/20130401T210301Z.diff.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40216 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-04-11

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e