rezize2fs: fix memory leak when fixing up the orphan file inode #147

Job	Run time
Build and test with ASAN enabled	1m 38s
Build and test with clang	1m 16s
Cross-compile for Android (aarch64)	37s
Build and test with gcc	54s
Cross-compile for Android (armv7a)	37s
Build and test with gcc -m32	1m 11s
Build and test on macOS	1m 15s
Cross-compile for Android (i686)	32s
Build and test with UBSAN enabled	1m 23s
Cross-compile for Android (x86_64)	41s
Build mke2fs on Windows with mingw32	1m 58s
Build mke2fs on Windows with mingw64	2m 0s
	14m 2s

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