debugfs: fix printing post-2038 inode timestamps #68

Job	Run time
Build and test with gcc	52s
Build and test with ASAN enabled	1m 33s
Build and test with clang	1m 11s
Cross-compile for Android (aarch64)	39s
Build and test with gcc -m32	1m 8s
Cross-compile for Android (armv7a)	41s
Build and test on macOS	2m 27s
Cross-compile for Android (i686)	39s
Build and test with UBSAN enabled	1m 59s
Cross-compile for Android (x86_64)	35s
Build mke2fs on Windows with mingw32	2m 24s
Build mke2fs on Windows with mingw64	2m 22s
	16m 30s

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