neweff production work: Fix crash for sea sector

[empserver] / src / lib / update / sect.c

diff --git a/src/lib/update/sect.c b/src/lib/update/sect.c
index 9229febf01da3c7b06e128081ae0546bb5d97821..9fcb21e486554980dc89262ffe9589e3ca8b00bd 100644 (file)
--- a/src/lib/update/sect.c
+++ b/src/lib/update/sect.c
@@ -29,7 +29,7 @@
  *  Known contributors to this file:
  *     Dave Pare, 1986
  *     Steve McClure, 1996
- *     Markus Armbruster, 2004-2016
+ *     Markus Armbruster, 2004-2021
  */
 
 #include <config.h>
@@ -58,7 +58,7 @@ buildeff(struct sctstr *sp)
         * Easier to destroy than to build.
         */
        dcp = &dchr[sp->sct_type];
-       build = 4 * avail / dcp->d_bwork;
+       build = dcp->d_bwork > 0 ? 4 * avail / dcp->d_bwork : 100;
        if (build <= sp->sct_effic)
            sp->sct_effic -= build;
        else {
@@ -72,7 +72,7 @@ buildeff(struct sctstr *sp)
 
     if (sp->sct_type == sp->sct_newtype) {
        dcp = &dchr[sp->sct_type];
-       delta = avail / dcp->d_bwork;
+       delta = dcp->d_bwork > 0 ? avail / dcp->d_bwork : 100;
        if (delta > 100 - sp->sct_effic)
            delta = 100 - sp->sct_effic;
        build = get_materials(sp, dcp->d_mat, delta);