Fix some compiler warnings thrown with newer gcc.

common/turbojpeg.c

@@ -108,6 +108,7 @@ static const tjscalingfactor sf[NUMSF]={
 	retval=-1;  goto bailout;}
 #define getinstance(handle) tjinstance *this=(tjinstance *)handle;  \
 	j_compress_ptr cinfo=NULL;  j_decompress_ptr dinfo=NULL;  \
+	(void) cinfo; (void) dinfo; /* silence warnings */ \
 	if(!this) {snprintf(errStr, JMSG_LENGTH_MAX, "Invalid handle");  \
 		return -1;}  \
 	cinfo=&this->cinfo;  dinfo=&this->dinfo;

libvncserver/rfbserver.c

@@ -228,9 +228,7 @@ void
 rfbNewClientConnection(rfbScreenInfoPtr rfbScreen,
                        int sock)
 {
-    rfbClientPtr cl;
-
-    cl = rfbNewClient(rfbScreen,sock);
+    rfbNewClient(rfbScreen,sock);
 }
 
 

libvncserver/websockets.c

@@ -622,7 +622,8 @@ webSocketsDecodeHybi(rfbClientPtr cl, char *dst, int len)
     int i;
     unsigned char opcode;
     ws_ctx_t *wsctx = (ws_ctx_t *)cl->wsctx;
-    int flength, fin, fhlen;
+    int flength, fhlen;
+    /* int fin; */ /* not used atm */ 
 
     // rfbLog(" <== %s[%d]: %d cl: %p, wsctx: %p-%p (%d)\n", __func__, gettid(), len, cl, wsctx, (char *)wsctx + sizeof(ws_ctx_t), sizeof(ws_ctx_t));
 
@@ -662,7 +663,7 @@ webSocketsDecodeHybi(rfbClientPtr cl, char *dst, int len)
     }
 
     opcode = header->b0 & 0x0f;
-    fin = (header->b0 & 0x80) >> 7;
+    /* fin = (header->b0 & 0x80) >> 7; */ /* not used atm */
     flength = header->b1 & 0x7f;
 
     /*

test/tjbench.c

@@ -38,6 +38,7 @@
 
 #define _throw(op, err) {  \
 	printf("ERROR in line %d while %s:\n%s\n", __LINE__, op, err);  \
+	(void)retval; /* silence warning */				\
 	retval=-1; goto bailout;}
 #define _throwunix(m) _throw(m, strerror(errno))
 #define _throwtj(m) _throw(m, tjGetErrorStr())