http://eressea.upb.de/mantis/view.php?id=1366

"Doppelte Fehlermeldung"
- remove error message from inner function.

src/common/kernel/build.c

@@ -798,7 +798,6 @@ maxbuild(const unit * u, const construction * cons)
     int have = get_pooled(u, rtype, GET_DEFAULT, INT_MAX);
     int need = required(1, cons->reqsize, cons->materials[c].number);
     if (have<need) {
-      cmistake(u, u->thisorder, 88, MSG_PRODUCE);
       return 0;
     }
     else maximum = min(maximum, have/need);