Philippe 09/03/2022: IO: bugfix: iresp_tmp_* varaibles were not initialized...

Philippe 09/03/2022: IO: bugfix: iresp_tmp_* varaibles were not initialized (crash in some cases due to random values if parallel I/O)

(cherry picked from commit e9e2eb43)

src/LIB/SURCOUCHE/src/mode_io_field_write.f90

-!MNH_LIC Copyright 1994-2021 CNRS, Meteo-France and Universite Paul Sabatier
+!MNH_LIC Copyright 1994-2022 CNRS, Meteo-France and Universite Paul Sabatier
 !MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 !MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !MNH_LIC for details. version 1.
@@ -1079,6 +1079,8 @@ end subroutine IO_Ndimlist_reduce
     iresp     = 0
     iresp_lfi = 0
     iresp_nc4 = 0
+    iresp_tmp_lfi = 0
+    iresp_tmp_nc4 = 0
     GALLOC    = .FALSE.
     GALLOC_ll = .FALSE.
     IHEXTOT = 2*JPHEXT+1