Ruby » Ruby master

id_table.c: extend, don't shrink

• id_table.c (hash_table_extend): should not shrink the table than
  the previous capacity. [ruby-core:76534] [Bug #12614]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55896 b2dd03c8-39d4-4d8f-98ff-823fe69b080e