Retire unread variables.

All could at least potentially receive updates, but they were never
consulted or even logged.

Signed-off-by: Aaron M. Ucko <ucko@ncbi.nlm.nih.gov>

src/dblib/bcp.c

@@ -1687,7 +1687,6 @@ bcp_readfmt(DBPROCESS * dbproc, const char filename[])
 	BCP_HOSTCOLINFO hostcol[1];
 	FILE *ffile;
 	char buffer[1024];
-	float lf_version = 0.0;
 	int li_numcols = 0;
 	int colinfo_count = 0;
 
@@ -1704,7 +1703,7 @@ bcp_readfmt(DBPROCESS * dbproc, const char filename[])
 	}
 
 	if ((_bcp_fgets(buffer, sizeof(buffer), ffile)) != NULL) {
-		lf_version = (float)atof(buffer);
+		/* version (float), ignored */
 	} else if (ferror(ffile)) {
 		dbperror(dbproc, SYBEBRFF, errno);
 		goto Cleanup;

src/tds/read.c

@@ -272,14 +272,13 @@ static size_t
 read_and_convert(TDSSOCKET * tds, TDSICONV * char_conv, size_t * wire_size, char *outbuf,
 		 size_t outbytesleft)
 {
-	int res;
 	TDSDATAINSTREAM r;
 	TDSSTATICOUTSTREAM w;
 
 	tds_datain_stream_init(&r, tds, *wire_size);
 	tds_staticout_stream_init(&w, outbuf, outbytesleft);
 
-	res = tds_convert_stream(tds, char_conv, to_client, &r.stream, &w.stream);
+	tds_convert_stream(tds, char_conv, to_client, &r.stream, &w.stream);
 	*wire_size = r.wire_size;
 	return (char *) w.stream.buffer - outbuf;
 }

src/tds/write.c

@@ -96,7 +96,6 @@ tds_put_n(TDSSOCKET * tds, const void *buf, size_t n)
 int
 tds_put_string(TDSSOCKET * tds, const char *s, int len)
 {
-	int res;
 	TDSSTATICINSTREAM r;
 	TDSDATAOUTSTREAM w;
 	enum TDS_ICONV_ENTRY iconv_entry;
@@ -140,7 +139,8 @@ tds_put_string(TDSSOCKET * tds, const char *s, int len)
 	tds_staticin_stream_init(&r, s, len);
 	tds_dataout_stream_init(&w, tds);
 
-	res = tds_convert_stream(tds, tds->conn->char_convs[iconv_entry], to_server, &r.stream, &w.stream);
+	tds_convert_stream(tds, tds->conn->char_convs[iconv_entry], to_server,
+			   &r.stream, &w.stream);
 	return (int) w.written;
 }