Fix llc_queue_size() type
It either returns 0 or LLC queue size() which has size_t return
type. This means it can never be negative - hence it's better to use
size_t as return type.
Change-Id: I2a6e849d349ab12854976bd0d68537a370a9c83d
Fixes: CID181478
diff --git a/src/tbf.h b/src/tbf.h
index 40ed974..4a304af 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -228,7 +228,7 @@
uint8_t ms_class() const;
void set_ms_class(uint8_t);
GprsCodingScheme current_cs() const;
- int llc_queue_size() const;
+ size_t llc_queue_size() const;
time_t created_ts() const;
uint8_t dl_slots() const;