Fix NULL dereference in rz_io_resize() #18362

Job	Run time
Build on CentOS 7	0s
Build on old Debian ${{ matrix.container }}	0s
Build on gcc 11 ASAN	0s
Build static	0s
changes	6s
Run debug tests on Ubuntu 20.04	0s
Create source tarball	0s
Test source tarball	0s
Build rizin rzpipe	0s
Build rz-bindgen	0s
linux-meson-clang-tests	2s
linux-meson-gcc-tests	23m 30s
macos-meson-clang-tests	11m 6s
linux-gcc-tests-asan	1h 8m 32s
linux-clang-tests-asan	51m 55s
linux-gcc-tests-codecov	4s
capstone-v4	3s
capstone-v5	2s
capstone-sys	2s
no-gpl-code	2s
Build OSX package	0s
Build Windows zip/installer ${{ matrix.name }}	0s
Include Rizin headers from C++ program (Linux)	0s
Build Android ${{ matrix.name }} package	0s
Test EXTRA_PREFIX works well	0s
Publish Docker image on Docker Hub	0s
Test Windows installer built with ${{ matrix.name }}	0s
Test OSX pkg	0s
Create draft release and upload artifacts	0s
	2h 35m 24s

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