Check for errors before releasing macOS keychain items #20
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macOS' SecKeychainFindGenericPassword can return a non-NULL item pointer even if the function fails (because the item is not found). In this case we must not try to CFRelease the item, or we'll segfault.
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macOS' SecKeychainFindGenericPassword can return a non-NULL item pointer even if the function fails (because the item is not found). In this case we must not try to CFRelease the item, or we'll segfault.