fixup! clients/upslog.c, docs/man/upslog.txt, NEWS.adoc: Same log fil…

…e may now safely be used in different logging tuples

clients/upslog.c

@@ -86,35 +86,35 @@
 		"%VAR input.voltage% %VAR ups.load% [%VAR ups.status%] " \
 		"%VAR ups.temperature% %VAR input.frequency%"
 
-static struct logtarget_t *get_logfile(const char *logfn)
+static struct logtarget_t *get_logfile(const char *logfn_arg)
 {
 	struct	logtarget_t	*p = NULL;
 
-	if (!logfn || !(*logfn) || !logfile_anchor)
+	if (!logfn_arg || !(*logfn_arg) || !logfile_anchor)
 		return p;
 
 	for (p = logfile_anchor; p != NULL; p = p->next) {
-		if (!strcmp(logfn, p->logfn))
+		if (!strcmp(logfn_arg, p->logfn))
 			return p;
 	}
 
 	/* NULL by now */
 	return p;
 }
 
-static struct logtarget_t *add_logfile(const char *logfn)
+static struct logtarget_t *add_logfile(const char *logfn_arg)
 {
-	struct	logtarget_t	*p = get_logfile(logfn);
+	struct	logtarget_t	*p = get_logfile(logfn_arg);
 
 	if (p)
 		return p;
 
 	/* Ignore bogus additions; FIXME: Error out? */
-	if (!logfn || !(*logfn))
+	if (!logfn_arg || !(*logfn_arg))
 		return p;
 
 	p = xcalloc(1, sizeof(struct monhost_ups));
-	p->logfn = xstrdup(logfn);
+	p->logfn = xstrdup(logfn_arg);
 	p->logfile = NULL;
 
 	/* Inject into the chain, head is as good a place as any */