stream: reduce scope of inline drop check

src/stream-tcp.c

@@ -325,13 +325,12 @@ static void StreamTcpSessionPoolCleanup(void *s)
     }
 }
 
-/**
+/** \internal
  *  \brief See if stream engine is dropping invalid packet in inline mode
- *
- *  \retval 0 no
- *  \retval 1 yes
+ *  \retval false no
+ *  \retval true yes
  */
-int StreamTcpInlineDropInvalid(void)
+static inline bool StreamTcpInlineDropInvalid(void)
 {
     return ((stream_config.flags & STREAMTCP_INIT_FLAG_INLINE)
             && (stream_config.flags & STREAMTCP_INIT_FLAG_DROP_INVALID));

src/stream-tcp.h

@@ -200,7 +200,6 @@ void StreamTcpSessionCleanup(TcpSession *ssn);
 void StreamTcpStreamCleanup(TcpStream *stream);
 /* check if bypass is enabled */
 int StreamTcpBypassEnabled(void);
-int StreamTcpInlineDropInvalid(void);
 int StreamTcpInlineMode(void);
 
 int TcpSessionPacketSsnReuse(const Packet *p, const Flow *f, const void *tcp_ssn);