Free up scanned kit memory on cleanup. Fixes a memory leak

drmr.c

@@ -263,6 +263,7 @@ static void cleanup(LV2_Handle instance) {
   pthread_join(drmr->load_thread, 0);
   if (drmr->num_samples > 0)
     free_samples(drmr->samples,drmr->num_samples);
+  free_kits(drmr->kits);
   free(drmr->gains);
   free(instance);
 }

drmr_hydrogen.c

@@ -326,6 +326,17 @@ void free_samples(drmr_sample* samples, int num_samples) {
   free(samples);
 }
 
+void free_kits(kits* kits) {
+  int i;
+  for (i = 0;i < kits->num_kits;i++) {
+    free(kits->kits[i].name);
+    free(kits->kits[i].desc);
+    free(kits->kits[i].path);
+  }
+  free(kits->kits);
+  free(kits);
+}
+
 int load_sample(char* path, drmr_layer* layer) {
   SNDFILE* sndf;
   int size;

drmr_ui.c

@@ -214,6 +214,7 @@ static void cleanup(LV2UI_Handle handle) {
   gtk_widget_destroy(ui->drmr_widget);
   if (ui->gain_sliders) free(ui->gain_sliders);
   if (ui->pan_sliders) free(ui->pan_sliders);
+  free_kits(ui->kits);
   free(ui);
 }