Problem: inconsistent naming style for private data members, conflicts with naming of local variables and member functions

Solution: apply and check _lower_case naming style for private data members

src/v1_encoder.hpp

@@ -46,7 +46,7 @@ class v1_encoder_t : public encoder_base_t<v1_encoder_t>
     void size_ready ();
     void message_ready ();
 
-    unsigned char tmpbuf[10];
+    unsigned char _tmpbuf[10];
 
     v1_encoder_t (const v1_encoder_t &);
     const v1_encoder_t &operator= (const v1_encoder_t &);