[harfbuzz] reuse shaperOpentype instead of allocating a new one #162
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I'll merge this change, since it is an internal optimization with no API change. |
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This is a memory optimization : previously, the
shaperfield (with type*shaperOpentype) was allocated at eachharbuzz.Shapecall.Removing the pointer and simply resetting the fields instead reduces memory usage.
This is very similar to #106