Use size_t as len type for Meter_UpdateValues

Most of the time the parameter is passed to snprintf type functions

1 files changed, 1 insertions, 1 deletions

diff --git a/DiskIOMeter.c b/DiskIOMeter.c
index da6ae7d5..0105ce35 100644
--- a/DiskIOMeter.c
+++ b/DiskIOMeter.c
@@ -30,7 +30,7 @@ static unsigned long int cached_read_diff = 0;
 static unsigned long int cached_write_diff = 0;
 static double cached_utilisation_diff = 0.0;
 
-static void DiskIOMeter_updateValues(Meter* this, char* buffer, int len) {
+static void DiskIOMeter_updateValues(Meter* this, char* buffer, size_t len) {
    static unsigned long long int cached_last_update = 0;
 
    struct timeval tv;