Don't call fwrite() with len == 0 when writing out relcache init file.
Noticed via -fsanitize=undefined.
Backpatch to all branches, for the same reasons as 46ab07ffda9.
Discussion: https://postgr.es/m/20220323173537.ll7klrglnp4gn2um@alap3.anarazel.de
Backpatch: 10-
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/1c6bb380e5aba195204a9c6d0b4713bd1b3dec9c
Modified Files
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src/backend/utils/cache/relcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)