Follow-up to r1931690: Swap arguments when calling find_package() for serf
because version must be the second positional argument.

* CMakeLists.txt
  (serf): Ditto.

Found by: jun66j5


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1931732 13f79535-47bb-0310-9956-ffa450edef68
1 file changed