Estimation of memory required for one short read in the Genome Aligner

The memory required for one read was estimated as:

void ReadShortReadsSubTask::run() {
...
n*24 + sizeof(SearchQuery) + ONE_SEARCH_QUERY_SIZE + query->length() + query->getNameLength() + query->getQuality().qualCodes.length()
...
}

But this was not enough and bad_alloc occurred on big data samples. A temporarily fix was done to avoid this - it doubled the value.

It is required to understand the reason of bad_alloc and fix the issue appropriately.