multilib-generator bug

[Cherish-Gww]

gcc/gcc/config/riscv/multilib-generator

Line 104 in e6cb552

if (len(x) == 0):

x type is map
object of type 'map' has no len()

please change to

def unique(x):
  #
  # Drop duplicated entry.
  # Convert list to set and then convert back to list.
  #
  # Add sorted to prevent non-deterministic results in different env.
  #
  return list(sorted(list(set(x))))