--- freeciv/server/ruleset.c.orig	Fri Aug 17 13:47:14 2001
+++ freeciv/server/ruleset.c	Fri Aug 17 13:50:35 2001
@@ -924,7 +924,10 @@
       }
     }
     b->terr_gate[k] = T_LAST;
-    free(list);
+    if(list) {
+      free(list);
+      list = NULL;
+    }
 
     list = secfile_lookup_str_vec(file, &count, "%s.spec_gate", sec[i]);
     b->spec_gate = fc_malloc((count + 1) * sizeof(b->spec_gate[0]));
@@ -940,7 +943,10 @@
       }
     }
     b->spec_gate[k] = S_NO_SPECIAL;
-    free(list);
+    if(list) {
+      free(list);
+      list = NULL;
+    }
 
     item = secfile_lookup_str(file, "%s.equiv_range", sec[i]);
     b->equiv_range = effect_range_from_str(item);
@@ -965,7 +971,10 @@
       }
     }
     b->equiv_dupl[k] = B_LAST;
-    free(list);
+    if(list) {
+      free(list);
+      list = NULL;
+    }
 
     list = secfile_lookup_str_vec(file, &count, "%s.equiv_repl", sec[i]);
     b->equiv_repl = fc_malloc((count + 1) * sizeof(b->equiv_repl[0]));
@@ -981,7 +990,10 @@
       }
     }
     b->equiv_repl[k] = B_LAST;
-    free(list);
+    if(list) {
+      free(list);
+      list = NULL;
+    }
 
     b->obsolete_by = lookup_tech(file, sec[i], "obsolete_by",
 				 0, filename, b->name);