information: fix system load cast

Cast the result of the calculation. If not, the load will always be 0.

Signed-off-by: David Bauer <mail@david-bauer.net>

src/information.c

@@ -206,7 +206,7 @@ int node_whisperer_information_system_load_collect(uint8_t *buffer, size_t buffe
 		return -1;
 	}
 
-	buffer[0] = (uint8_t) samples[0] * 10;
+	buffer[0] = (uint8_t) (samples[0] * 10);
 	return 1;
 }