rezize2fs: fix memory leak when fixing up the orphan file inode #146

Job	Run time
Build and test with gcc	54s
Build and test with clang	1m 12s
Build and test with ASAN enabled	1m 40s
Cross-compile for Android (aarch64)	40s
Build and test with gcc -m32	1m 11s
Build and test on macOS	1m 40s
Cross-compile for Android (armv7a)	42s
Build and test with UBSAN enabled	1m 26s
Cross-compile for Android (i686)	41s
Build mke2fs on Windows with mingw32	2m 1s
Cross-compile for Android (x86_64)	36s
Build mke2fs on Windows with mingw64	1m 58s
	14m 41s

Provide feedback