*avoided warnings; *updated osx binary.

core/my_basic.c

@@ -2887,6 +2887,8 @@ _routine:
 												_handle_error_on_obj(s, SE_RN_CANNOT_FIND_WITH_GIVEN_INDEX, 0, TON(l), MB_FUNC_ERR, _exit, result);
 											}
 
+											break;
+										default: /* Do nothing */
 											break;
 										}
 
@@ -10121,6 +10123,8 @@ int _core_let(mb_interpreter_t* s, void** l) {
 				mb_make_nil(key);
 				mb_check(mb_pop_value(s, l, &key));
 
+				break;
+			default: /* Do nothing */
 				break;
 			}
 
@@ -10153,6 +10157,8 @@ int _core_let(mb_interpreter_t* s, void** l) {
 				case _DT_DICT:
 					_set_dict(var->data->data.dict, &key, 0, 0, val);
 
+					break;
+				default: /* Do nothing */
 					break;
 				}