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streamIteratorRemoveEntry(): set back lp only if pointer changed.
Most of the times the pointer will remain the same since integers of similar size don't take more space in listpacks. Related to #5210.
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@ -726,7 +726,8 @@ void streamIteratorRemoveEntry(streamIterator *si, streamID *current) {
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lp = lpReplaceInteger(lp,&p,aux+1);
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/* Update the listpack with the new pointer. */
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raxInsert(si->stream->rax,si->ri.key,si->ri.key_len,lp,NULL);
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if (si->lp != lp)
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raxInsert(si->stream->rax,si->ri.key,si->ri.key_len,lp,NULL);
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}
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/* Update the number of entries counter. */
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