Warnings on gcc (apple) compilation

src/model_menus.cpp

@@ -425,7 +425,7 @@ void menuProcModel(uint8_t event)
            int8_t sec = timer->val%60;
            sec -= checkIncDecModel(event, sec+2, 1, 62)-2;
            timer->val -= sec ;
-           if ((int16_t)timer->val < 0) timer->val=0;
+           if (((int16_t)timer->val) < 0) timer->val=0;
            break;
          }
          case 3:

src/pers.cpp

@@ -283,7 +283,7 @@ void eeLoadModel(uint8_t id)
 
 #ifdef SIMU
     if (sz > 0 && sz != sizeof(g_model)) {
-      printf("Model data read=%d bytes vs %d bytes\n", sz, sizeof(ModelData));
+      printf("Model data read=%d bytes vs %u bytes\n", sz, sizeof(ModelData));
     }
 #endif