th_mask_callid_str & th_unmask_callid_str functions used for API call to 
encode/decode call-ID uses static array declaration for callid_mbuf was unable 
to free callid data lump after use and leads to memory leak. when these 
functions was used through API call for topos module memory leak bug as reported
qm_free(): BUG: bad pointer 0x7faec4a7xxxx (out of memory block!) called from 
core: core/data_lump.c: free_lump(470)

This two funtions are not used  other than API.

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You can view, comment on, or merge this pull request online at:

  https://github.com/kamailio/kamailio/pull/3456

-- Commit Summary --

  * topoh: memory leak fix for API call

-- File Changes --

    M src/modules/topoh/th_msg.c (36)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3456.patch
https://github.com/kamailio/kamailio/pull/3456.diff

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