Add missing function definition to hash.c
Whole hash.c is used only if USE=lowmem is enabled.
https://bugs.gentoo.org/919215
--- a/src/hash.h
+++ b/src/hash.h
@@ -57,6 +57,7 @@
   
 }Table_hash;
 
+long int hashVerifie (Table_hash *table, char *mess,long int diag);
 
 /*
  *