vulnerability to PROJ6/GDAL3

[rsbivand]

Running revdeps from sp (sp (my github fork) with development rgdal from R-Forge):

> packageVersion("sp")
[1] ‘1.3.4’
> packageVersion("rgdal")
[1] ‘1.5.3’
> rgdal::rgdal_extSoftVersion()
          GDAL GDAL_with_GEOS           PROJ             sp 
       "3.0.2"         "TRUE"        "6.2.1"        "1.3-2" 

a test fails:

> library(testthat)
> library(quadmesh)
> 
> test_check("quadmesh")
── 1. Failure: mesh_plot works (@test-image.R#24)  ─────────────────────────────
`func_etopo_plot()` produced warnings.

── 2. Failure: texturing works (@test-texture.R#5)  ────────────────────────────
`texture_coordinates(raster::brick(etopo, etopo, etopo), etopo)` produced warnings.

══ testthat results  ═══════════════════════════════════════════════════════════
[ OK: 31 | SKIPPED: 2 | WARNINGS: 2 | FAILED: 2 ]
1. Failure: mesh_plot works (@test-image.R#24) 
2. Failure: texturing works (@test-texture.R#5) 

See:

http://rgdal.r-forge.r-project.org/articles/PROJ6_GDAL3.html
r-spatial/sf#1231
r-spatial/sf#1187
r-spatial/sf#1146
r-spatial/discuss#28

for background. See:

r-spatial/discuss#28 (comment)

for a way of testing fixes in a docker container contributed by Jakub Nowosad.

[mdsumner]

Fixed warnings 0048180

[mdsumner]

thanks, all quiet on CRAN now