memory/alloc: Use SCCalloc instead of malloc/memset

[jlucovsky]

Continuation of #9857

Replace SCMalloc/memset with SCCalloc

There are many places that use the following pattern:

     mem = SCMalloc(sizeof(foo));
     if (mem) {
        memset(&mem, 0, sizeof(foo));
    }

These can all be replaced by using SCCalloc which returns 0-filled memory.

Describe changes:

• Changed SCMalloc followed by memset to SCCalloc

Updates:

• Git cleanup - removed extraneous commits present in memory/alloc: Use SCCalloc instead of malloc/memset  #9857
• Convert SCCalloc(1, element_count * sizeof(element)) to SCCalloc(element_count, sizeof(element))

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[suricata-qa]

Information: QA ran without warnings.

Pipeline 16676

[victorjulien]

Merged in #9859, thanks!