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ba6e527289
There is a couple of newGenericDecompressor function usages, where returned possibly non-nil `err` is not checked before dereferencing returned decompressor. It may lead to nil ptr dereferencing. This commit adds check for `err` to prevent dereferencing potentially nullable decompressor. Found by Linux Verification Center (linuxtesting.org) with SVACE Signed-off-by: Mikhail Dmitrichenko <m.dmitrichenko222@gmail.com>