HS 2.0R2: Fix memory leak on error path in hs20-osu-client

fqdn was not freed before return in case the server uses an unsupported
location for the PPS MO in the addMO command.

Signed-off-by: Nishant Chaprana <n.chaprana@samsung.com>

hs20/client/osu_client.c

@@ -542,6 +542,7 @@ int hs20_add_pps_mo(struct hs20_osu_client *ctx, const char *uri,
 				   uri);
 			write_result(ctx, "Unsupported location for addMO to "
 				     "add PPS MO (extra directory): '%s'", uri);
+			free(fqdn);
 			return -1;
 		}
 		*pos = '\0'; /* remove trailing slash and PPS node name */