osd-batt: Bugfix to previous commit

osd-batt.c

@@ -94,7 +94,8 @@ static void parse_batt(char *batt_name)
   if (!sys_read_int("present", 1))
     return;
 
-  int charging = sys_read_int("charging", 0);
+  char status[BUFSIZE];
+  int charging = sys_read(status, "status") && !strcmp(status, "Charging");
   int charge_full = sys_read_int("charge_full", 0);
   int charge_now = sys_read_int("charge_now", 0);
   int current_now = sys_read_int("current_now", 0);