Fix missing symbol in xios wrapper when compiling with -no_io option

YM
8 jobs for trunk2master in 5 minutes and 22 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #503103
build-gnu-mpi

00:01:04

passed #503104
build-gnu-mpi-omp

00:01:03

passed #503105
build-intel

00:04:28

passed #503107
build-noio

00:00:58

passed #503106
build-nvidia

00:01:39

passed #503108
build-xml

00:01:05

 
  Check
passed #503110
check-dcmip41

00:04:16

manual #503109
jean-zay allowed to fail manual
check-jean-zay