1 files changed, 11 insertions, 13 deletions

diff --git a/apps/plugins/puzzles/src/inertia.c b/apps/plugins/puzzles/src/inertia.c
index 918f9797e5..22cf235f20 100644
--- a/apps/plugins/puzzles/src/inertia.c
+++ b/apps/plugins/puzzles/src/inertia.c
@@ -168,19 +168,15 @@ static config_item *game_configure(const game_params *params)
     ret[0].name = "Width";
     ret[0].type = C_STRING;
     sprintf(buf, "%d", params->w);
-    ret[0].sval = dupstr(buf);
-    ret[0].ival = 0;
+    ret[0].u.string.sval = dupstr(buf);
 
     ret[1].name = "Height";
     ret[1].type = C_STRING;
     sprintf(buf, "%d", params->h);
-    ret[1].sval = dupstr(buf);
-    ret[1].ival = 0;
+    ret[1].u.string.sval = dupstr(buf);
 
     ret[2].name = NULL;
     ret[2].type = C_END;
-    ret[2].sval = NULL;
-    ret[2].ival = 0;
 
     return ret;
 }
@@ -189,13 +185,13 @@ static game_params *custom_params(const config_item *cfg)
 {
     game_params *ret = snew(game_params);
 
-    ret->w = atoi(cfg[0].sval);
-    ret->h = atoi(cfg[1].sval);
+    ret->w = atoi(cfg[0].u.string.sval);
+    ret->h = atoi(cfg[1].u.string.sval);
 
     return ret;
 }
 
-static char *validate_params(const game_params *params, int full)
+static const char *validate_params(const game_params *params, int full)
 {
     /*
      * Avoid completely degenerate cases which only have one
@@ -589,7 +585,7 @@ static char *new_game_desc(const game_params *params, random_state *rs,
     return gengrid(params->w, params->h, rs);
 }
 
-static char *validate_desc(const game_params *params, const char *desc)
+static const char *validate_desc(const game_params *params, const char *desc)
 {
     int w = params->w, h = params->h, wh = w*h;
     int starts = 0, gems = 0, i;
@@ -733,7 +729,7 @@ static int compare_integers(const void *av, const void *bv)
 }
 
 static char *solve_game(const game_state *state, const game_state *currstate,
-                        const char *aux, char **error)
+                        const char *aux, const char **error)
 {
     int w = currstate->p.w, h = currstate->p.h, wh = w*h;
     int *nodes, *nodeindex, *edges, *backedges, *edgei, *backedgei, *circuit;
@@ -742,7 +738,8 @@ static char *solve_game(const game_state *state, const game_state *currstate,
     int *unvisited;
     int circuitlen, circuitsize;
     int head, tail, pass, i, j, n, x, y, d, dd;
-    char *err, *soln, *p;
+    const char *err;
+    char *soln, *p;
 
     /*
      * Before anything else, deal with the special case in which
@@ -1737,7 +1734,8 @@ static game_state *execute_move(const game_state *state, const char *move)
             assert(ret->solnpos < ret->soln->len); /* or gems == 0 */
             assert(!ret->dead); /* or not a solution */
         } else {
-            char *error = NULL, *soln = solve_game(NULL, ret, NULL, &error);
+            const char *error = NULL;
+            char *soln = solve_game(NULL, ret, NULL, &error);
             if (!error) {
                 install_new_solution(ret, soln);
                 sfree(soln);