no-op commit to note that the example given in the previous commit is

a very bad one, since the shift does not actually overflow.  This is
a better example (assuming uint64_t = unsigned long long):

  ~0LLU >> 9             =   0x7fffffffffffffLLU
  ~0LLU >> 9 << 10       = 0xfffffffffffffc00LLU
  ~0LLU >> 9 << 10 >> 10 =   0x3fffffffffffffLLU

lib/libutil/expand_number.c

@@ -66,7 +66,7 @@ expand_number(const char *buf, uint64_t *num)
 		return (0);
 	}
 
-#define SHIFT(n, b)							\
+#define SHIFT(n, b) \
 	do { if (((n << b) >> b) != n) goto overflow; n <<= b; } while (0)
 
 	switch (tolower((unsigned char)*endptr)) {