Fix global variable counter for alias

If we alias two variable multiple times, for example like this:

    alias $foo $bar
    alias $foo $bar

Then we will increment the counter for entry2->var->counter each time,
which is not correct because we are not adding more references to
entry2->var. This reports as a memory leak in RUBY_FREE_AT_EXIT because
entry2->var->counter will never reach 0 and thus will never be freed.

0 files changed, 0 insertions, 0 deletions