compile.c: fix KW_SPLAT flag condition
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
compile.c: fix KW_SPLAT flag condition
KW_SPLAT flag. splat is value node only without key node,
simple assoc argument is not. [ruby-core:82291] [Bug #13793]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e