BZ#14498: fix infinite loop in nss_db_getservbyname

nss_db uses nss_files code for services, but a continue on protocol
mismatch that doesn't affect nss_files skipped the code that advanced
to the next db entry.  Any one of these changes would suffice to fix
it, but fixing both makes them both safer to reuse elsewhere.

for  ChangeLog

	[BZ #14498]
	* NEWS: Fixed.
	* nss/nss_db/db-XXX.c (_nss_db_get##name##_r): Update hidx
	after parsing line but before break_if_match.
	* nss/nss_files/files-service (DB_LOOKUP): Don't "continue;"
	if there is a protocol mismatch.

1 files changed, 4 insertions, 4 deletions

diff --git a/NEWS b/NEWS
index 4b7eeb4..5ba3f1b 100644
--- a/NEWS
+++ b/NEWS
@@ -9,10 +9,10 @@ Version 2.21
 
 * The following bugs are resolved with this release:
 
-  6652, 12926, 14132, 14138, 14171, 15215, 15884, 17266, 17344, 17363,
-  17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522,
-  17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585,
-  17589, 17594, 17616, 17625.
+  6652, 12926, 14132, 14138, 14171, 14498, 15215, 15884, 17266, 17344,
+  17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508,
+  17522, 17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584,
+  17585, 17589, 17594, 17616, 17625.
 
 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
   under certain input conditions resulting in the execution of a shell for