[vala/staging: 3/4] codegen: Add prototype for *_register_type() function

[Rico Tzschichholz <ricotz src gnome org>]

commit 5a06432d675ba9d9d1b08ad5568317b5222d8fd9
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Nov 4 20:22:22 2018 +0100

    codegen: Add prototype for *_register_type() function
    
    Found with -Werror=missing-prototypes

 codegen/valatyperegisterfunction.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/codegen/valatyperegisterfunction.vala b/codegen/valatyperegisterfunction.vala
index c0ceecd9d..c4c860624 100644
--- a/codegen/valatyperegisterfunction.vala
+++ b/codegen/valatyperegisterfunction.vala
@@ -85,6 +85,10 @@ public abstract class Vala.TypeRegisterFunction {
                        fun = new CCodeFunction ("%s_register_type".printf (get_ccode_lower_case_name 
(type_symbol)), "GType");
                        fun.add_parameter (new CCodeParameter ("module", "GTypeModule *"));
 
+                       fun.is_declaration = true;
+                       declaration_fragment.append (fun.copy ());
+                       fun.is_declaration = false;
+
                        var get_fun = new CCodeFunction ("%s_get_type".printf (get_ccode_lower_case_name 
(type_symbol)), "GType");
                        get_fun.modifiers = CCodeModifiers.CONST;