Don't insert 2nd space between NSEC3 nexthash and typemap fields

(cherry picked from commit d4ea1edd)

bin/tests/system/xfer/dig1.good

@@ -149,7 +149,7 @@ wks01.example.		3600	IN	WKS	10.0.0.1 6 0 1 2 21 23
 wks02.example.		3600	IN	WKS	10.0.0.1 17 0 1 2 53
 wks03.example.		3600	IN	WKS	10.0.0.2 6 65535
 x2501.example.		3600	IN	X25	"123456789"
-8f1tmio9avcom2k0frp92lgcumak0cad.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C 8FPNS2UCT7FBS643THP2B77PEQ77K6IU  A NS SOA MX AAAA RRSIG DNSKEY NSEC3PARAM
+8f1tmio9avcom2k0frp92lgcumak0cad.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C 8FPNS2UCT7FBS643THP2B77PEQ77K6IU A NS SOA MX AAAA RRSIG DNSKEY NSEC3PARAM
 kcd3juae64f9c5csl1kif1htaui7un0g.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C KD5MN2M20340DGO0BL7NTSB8JP4BSC7E
-mr5ukvsk1l37btu4q7b1dfevft4hkqdk.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C MT38J6VG7S0SN5G17MCUF6IQIKFUAJ05  A AAAA RRSIG
+mr5ukvsk1l37btu4q7b1dfevft4hkqdk.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C MT38J6VG7S0SN5G17MCUF6IQIKFUAJ05 A AAAA RRSIG
 example.		86400	IN	SOA	ns2.example. hostmaster.example. 1397051952 5 5 1814400 3600

bin/tests/system/xfer/dig2.good

@@ -149,7 +149,7 @@ wks01.example.		3600	IN	WKS	10.0.0.1 6 0 1 2 21 23
 wks02.example.		3600	IN	WKS	10.0.0.1 17 0 1 2 53
 wks03.example.		3600	IN	WKS	10.0.0.2 6 65535
 x2501.example.		3600	IN	X25	"123456789"
-8f1tmio9avcom2k0frp92lgcumak0cad.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C 8FPNS2UCT7FBS643THP2B77PEQ77K6IU  A NS SOA MX AAAA RRSIG DNSKEY NSEC3PARAM
+8f1tmio9avcom2k0frp92lgcumak0cad.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C 8FPNS2UCT7FBS643THP2B77PEQ77K6IU A NS SOA MX AAAA RRSIG DNSKEY NSEC3PARAM
 kcd3juae64f9c5csl1kif1htaui7un0g.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C KD5MN2M20340DGO0BL7NTSB8JP4BSC7E
-mr5ukvsk1l37btu4q7b1dfevft4hkqdk.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C MT38J6VG7S0SN5G17MCUF6IQIKFUAJ05  A AAAA RRSIG
+mr5ukvsk1l37btu4q7b1dfevft4hkqdk.example. 3600 IN NSEC3 1 0 10 D2CF0294C020CE6C MT38J6VG7S0SN5G17MCUF6IQIKFUAJ05 A AAAA RRSIG
 example.		86400	IN	SOA	ns2.example. hostmaster.example. 1397051953 5 5 1814400 3600

lib/dns/rdata.c

@@ -488,7 +488,7 @@ typemap_totext(isc_region_t *sr, dns_rdata_textctx_t *tctx,
 {
 	unsigned int i, j, k;
 	unsigned int window, len;
-	isc_boolean_t first = ISC_FALSE;
+	isc_boolean_t first = ISC_TRUE;
 
 	for (i = 0; i < sr->length; i += len) {
 		if (tctx != NULL &&

lib/dns/rdata/generic/csync_62.c

@@ -69,6 +69,12 @@ totext_csync(ARGS_TOTEXT) {
 	snprintf(buf, sizeof(buf), "%lu", num);
 	RETERR(str_totext(buf, target));
 
+	/*
+	 * Don't leave a trailing space when there's no typemap present.
+	 */
+	if (sr.length > 0) {
+		RETERR(str_totext(" ", target));
+	}
 	return (typemap_totext(&sr, NULL, target));
 }
 

lib/dns/rdata/generic/nsec3_50.c

@@ -162,9 +162,9 @@ totext_nsec3(ARGS_TOTEXT) {
 	/*
 	 * Don't leave a trailing space when there's no typemap present.
 	 */
-	if (((tctx->flags & DNS_STYLEFLAG_MULTILINE) == 0) && (sr.length > 0))
+	if (((tctx->flags & DNS_STYLEFLAG_MULTILINE) == 0) && (sr.length > 0)) {
 		RETERR(str_totext(" ", target));
-
+	}
 	RETERR(typemap_totext(&sr, tctx, target));
 
 	if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)

lib/dns/rdata/generic/nsec_47.c

@@ -61,6 +61,12 @@ totext_nsec(ARGS_TOTEXT) {
 	dns_name_fromregion(&name, &sr);
 	isc_region_consume(&sr, name_length(&name));
 	RETERR(dns_name_totext(&name, ISC_FALSE, target));
+	/*
+	 * Don't leave a trailing space when there's no typemap present.
+	 */
+	if (sr.length > 0) {
+		RETERR(str_totext(" ", target));
+	}
 	return (typemap_totext(&sr, NULL, target));
 }