fix segfault myhtml_tag_get_by_id

lexborisov / Modest

Modest is a fast HTML renderer implemented as a pure C99 library with no outside dependencies.

GNU Lesser General Public License v2.1

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fix segfault myhtml_tag_get_by_id #48

Closed Azq2 closed 6 years ago

Azq2 commented 6 years ago

If pass some big tag id value to myhtml_tag_get_by_id, then mcsimple_get_by_absolute_position access to uninitialized memory area. Now checks calculated list index by mcsimple->list_pos_length_used value to fix this.