uptime.h in linux_stat-2.3.0

- old
+ new

@@ -1,5 +1,5 @@
-VALUE uptime_f(VALUE obj) {
+static VALUE uptime_f(volatile VALUE obj) {
 	FILE *f = fopen("/proc/uptime", "r") ;
 	if (!f) return Qnil ;
 
 	double up_f ;
 	char status = fscanf(f, "%lf", &up_f) ;