app, plug-ins: Comment unused stuff on macOS

This fixes Apple Clang warnings about:

- idx
- count_large
- count_nan
- n
- iteration
- original_id
- real_pos

app/core/gimppalette-load.c

@@ -1881,7 +1881,7 @@ swatchbooker_load_start_element (GMarkupParseContext *context,
           if (! strcmp (lower_att_name, "material"))
             {
               GList *cols;
-              gint   original_id = 0;
+              /*gint   original_id = 0;*/
 
               for (cols = gimp_palette_get_colors (sbz_data->palette);
                    cols;
@@ -1897,7 +1897,7 @@ swatchbooker_load_start_element (GMarkupParseContext *context,
                       sbz_data->sorted_position++;
                       break;
                     }
-                  original_id++;
+                  /*original_id++;*/
                 }
 
               g_free (lower_att_name);

app/widgets/gimpmenu.c

@@ -593,7 +593,7 @@ gimp_menu_section_items_changed (GMenuModel *model,
   GtkWidget *separator;
   gboolean   found = FALSE;
   gint       count = position;
-  gint       real_pos = 0;
+  /*gint       real_pos = 0;*/
 
   separator = g_hash_table_lookup (menu->priv->sections, model);
   g_return_if_fail (separator != NULL);
@@ -601,7 +601,7 @@ gimp_menu_section_items_changed (GMenuModel *model,
   children = gtk_container_get_children (GTK_CONTAINER (menu));
   for (iter = children; iter; iter = iter->next)
     {
-      real_pos++;
+      /*real_pos++;*/
 
       if (! found)
         {

plug-ins/common/sample-colorize.c

@@ -2707,13 +2707,13 @@ rnd_remap (gint32  lum,
   t_samp_color_elem *col_ptr;
   gint               rnd;
   gint               ct;
-  gint               idx;
+  /*gint               idx;*/
 
   if (g_lum_tab[lum].all_samples > 1)
     {
       rnd = g_random_int_range (0, g_lum_tab[lum].all_samples);
       ct  = 0;
-      idx = 0;
+      /*idx = 0;*/
 
       for (col_ptr = g_lum_tab[lum].col_ptr;
            col_ptr != NULL;
@@ -2729,7 +2729,7 @@ rnd_remap (gint32  lum,
               memcpy (mapped_color, &col_ptr->color[0], 3);
               return;
             }
-          idx++;
+          /*idx++;*/
         }
     }
 

plug-ins/flame/libifs.c

@@ -42,7 +42,8 @@ iterate (control_point *cp,
          int            fuse,
          point         *points)
 {
-  int    i, j, count_large = 0, count_nan = 0;
+  /*int    i, j, count_large = 0, count_nan = 0;*/
+  int    i, j;
   int    xform_distrib[CHOOSE_XFORM_GRAIN];
   double p[3], t, r, dr;
   p[0] = points[0][0];
@@ -81,9 +82,9 @@ iterate (control_point *cp,
 
       if (p[0] > 100.0 || p[0] < -100.0 ||
         p[1] > 100.0 || p[1] < -100.0)
-      count_large++;
+      /*count_large++;
       if (p[0] != p[0])
-        count_nan++;
+        count_nan++;*/
 
 #define coef   cp->xform[fn].c
 #define vari   cp->xform[fn].var

plug-ins/gradient-flare/gradient-flare.c

@@ -3133,10 +3133,10 @@ dlg_selector_setup_listbox (void)
 {
   GList  *list;
   GFlare *gflare;
-  gint    n;
+  /*gint    n;*/
 
   list = gflares_list;
-  n = 0;
+  /*n = 0;*/
 
   while (list)
     {
@@ -3158,7 +3158,7 @@ dlg_selector_setup_listbox (void)
                                          &iter);
 
       list = list->next;
-      n++;
+      /*n++;*/
     }
 }
 

plug-ins/selection-to-path/fit.c

@@ -1085,7 +1085,7 @@ fit_with_least_squares (curve_type curve)
   spline_type spline, best_spline;
   spline_list_type *spline_list;
   unsigned worst_point;
-  unsigned iteration = 0;
+  /*unsigned iteration = 0;*/
   real previous_error = FLT_MAX;
   real improvement = FLT_MAX;
 
@@ -1148,7 +1148,7 @@ fit_with_least_squares (curve_type curve)
           || error > reparameterize_threshold)
 	break;
 
-      iteration++;
+      /*iteration++;*/
 /*       LOG3 ("Reparameterization #%u (error was %.3f, a %u%% improvement):\n", */
 /*             iteration, error, ((unsigned) (improvement * 100.0))); */