Juan 12/11/2014: only update_halo if LX or LY

MNH/get_halo.f90

@@ -244,9 +244,11 @@ IF (LY) THEN
 ENDIF
 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
+IF (LX .OR. LY) THEN
 CALL ADD3DFIELD_ll(TZ_PSRC_ll,PSRC)
 CALL UPDATE_HALO_ll(TZ_PSRC_ll,IERROR, HDIR=HDIR )
 CALL CLEANLIST_ll(TZ_PSRC_ll)
+ENDIF
 
 IF (LX) THEN
    IF (.NOT.GWEST) THEN