crwimage_int: remove C pointers #1661

Job	Run time
MSYS	1s
FreeBSD	1s
Emscripten	1s
macOS-deps=enabled	41s
macOS-deps=disabled	1m 0s
MSYS2-UCRT64-deps=enabled	1s
Linux-GCC9-deps=forcefallback	1s
MSYS2-CLANG64-deps=enabled	1s
Linux-Clang11-deps=forcefallback	1s
Linux-GCC9-deps=default	1s
MSVC-forcefallback-x64	1s
MSYS2-UCRT64-deps=disabled	1s
Linux-Clang11-deps=default	1s
Linux-GCC13-deps=forcefallback	1s
MSVC-forcefallback-x86	1s
MSYS2-CLANG64-deps=disabled	1s
Linux-Clang19-deps=forcefallback	1s
Linux-GCC13-deps=default	1s
MSVC-default-x64	1s
Linux-Clang19-deps=default	1s
MSVC-default-x86	1s
clang-cl-forcefallback	1s
clang-cl-default	1s
	2m 2s

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