Merge branch '3965-source-never-read-master.c-v9_16' into 'bind-9.16'

[9.16] Fix scan-build issue: initialized value never read

See merge request isc-projects/bind9!7739

CHANGES

@@ -1,3 +1,6 @@
+6129.	[cleanup]	Value stored to 'source' during its initialization is
+			never read. [GL #3965]
+
 6124.	[bug]		When changing from a NSEC3 capable DNSSEC algorithm to
 			an NSEC3 incapable DNSSEC algorithm using KASP the zone
 			could sometimes be incompletely signed. [GL #3937]

lib/dns/master.c

@@ -1101,7 +1101,7 @@ load_text(dns_loadctx_t *lctx) {
 	char *lhs = NULL;
 	char *gtype = NULL;
 	char *rhs = NULL;
-	const char *source = "";
+	const char *source;
 	unsigned long line = 0;
 	bool explicit_ttl;
 	char classname1[DNS_RDATACLASS_FORMATSIZE];