crwimage_int: remove C pointers #1663

Job	Run time
MSVC-forcefallback-x64	4m 13s
Linux-Clang11-deps=forcefallback	9m 19s
MSVC-forcefallback-x86	4m 40s
Linux-Clang11-deps=default	2m 10s
FreeBSD	4m 16s
MSVC-default-x64	2m 55s
Emscripten	3m 20s
Linux-Clang19-deps=forcefallback	9m 48s
MSVC-default-x86	3m 33s
Linux-Clang19-deps=default	2m 15s
macOS-deps=enabled	2m 0s
MSYS	2m 50s
MSYS2-UCRT64-deps=enabled	5m 34s
macOS-deps=disabled	1m 23s
MSYS2-CLANG64-deps=enabled	4m 44s
Linux-GCC9-deps=forcefallback	8m 17s
MSYS2-UCRT64-deps=disabled	3m 48s
clang-cl-forcefallback	4m 35s
Linux-GCC9-deps=default	1m 22s
MSYS2-CLANG64-deps=disabled	2m 55s
clang-cl-default	3m 43s
Linux-GCC13-deps=forcefallback	8m 56s
Linux-GCC13-deps=default	1m 59s
	1h 38m 35s

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