[PATCH 2/5] vpn-provider: Fix issue with const return value from strrchr

When compiling with recent gcc and glibc-2.43 the --Wdiscarded-qualifiers
warning occurs because with ISO C23, the function strrrchr that return
pointers into their input arrays now have definitions as macros that
return a pointer to a const-qualified type when the input argument is
a pointer to a const-qualified type.

../vpn/vpn-provider.c: In function 'get_ident':
../vpn/vpn-provider.c:1658:13: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
 1658 |         pos = strrchr(path, '/');
      |             ^
---
 vpn/vpn-provider.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/vpn/vpn-provider.c b/vpn/vpn-provider.c
index 4bcb8373..dafdaffa 100644
--- a/vpn/vpn-provider.c
+++ b/vpn/vpn-provider.c
@@ -1648,9 +1648,9 @@ static void connection_removed_signal(struct vpn_provider *provider)
 	dbus_message_unref(signal);
 }
 
-static char *get_ident(const char *path)
+static const char *get_ident(const char *path)
 {
-	char *pos;
+	const char *pos;
 
 	if (*path != '/')
 		return NULL;
@@ -1665,7 +1665,7 @@ static char *get_ident(const char *path)
 int __vpn_provider_remove(const char *path)
 {
 	struct vpn_provider *provider;
-	char *ident;
+	const char *ident;
 
 	DBG("path %s", path);
 
-- 
2.51.0