[gnome-control-center] Fix -Wimplicit-function-declaration in previous commit

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d055c4de5c30716d3109210c2eeebbc2183ea599
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Jul 16 18:58:27 2020 -0500

    Fix -Wimplicit-function-declaration in previous commit
    
    Dumb mistake, sorry. Follow up to !791

 panels/network/connection-editor/ce-page-ip6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/network/connection-editor/ce-page-ip6.c b/panels/network/connection-editor/ce-page-ip6.c
index 8442841cc9..c6a1d12953 100644
--- a/panels/network/connection-editor/ce-page-ip6.c
+++ b/panels/network/connection-editor/ce-page-ip6.c
@@ -499,7 +499,7 @@ connect_ip6_page (CEPageIP6 *self)
         } else if (g_strcmp0 (str_method, NM_SETTING_IP6_CONFIG_METHOD_SHARED) == 0) {
                 method = IP6_METHOD_SHARED;
         } else if (g_strcmp0 (str_method, NM_SETTING_IP6_CONFIG_METHOD_DISABLED ||
-                   g_strcmp_0 (str_method, NM_SETTING_IP6_CONFIG_METHOD_IGNORE)) == 0) {
+                   g_strcmp0 (str_method, NM_SETTING_IP6_CONFIG_METHOD_IGNORE)) == 0) {
                 method = IP6_METHOD_DISABLED;
         }