[PostGIS] #4315: PG12: Optimize FunctionCall parameter size in rtpg_mapalgebra.c

[PostGIS]

#4315: PG12: Optimize FunctionCall parameter size in rtpg_mapalgebra.c
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  Reporter:  Algunenano   |      Owner:  dustymugs
      Type:  enhancement  |     Status:  closed
  Priority:  low          |  Milestone:  PostGIS Fund Me
 Component:  raster       |    Version:  master
Resolution:  fixed        |   Keywords:
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Changes (by Darafei Praliaskouski <me@…>):

 * resolution:   => fixed
 * status:  new => closed

Comment:

 In [changeset:"4ec0a1dd0a311af57c593656637f5c98ac7a1799/git" 4ec0a1d/git]:
 {{{#!CommitTicketReference repository="git"
 revision="4ec0a1dd0a311af57c593656637f5c98ac7a1799"
 Improve raster MapAlgebra callback arity handling

 Allow n-raster ST_MapAlgebra callbacks to omit the variadic userargs
 parameter, matching the existing callback arity flexibility in adjacent
 MapAlgebra variants. Size raster MapAlgebra FunctionCallInfo storage to
 the callback arities used instead of allocating FUNC_MAX_ARGS slots.

 Track the owned empty userargs array used for strict three-argument
 callbacks so it can be released with the MapAlgebra argument state.

 Closes #2804

 Closes #4315

 Closes https://github.com/postgis/postgis/pull/1035
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4315#comment:1>
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