[gjs] arg-cache: Fix rebase collision

[Philip Chimento <pchimento src gnome org>]

commit 7b1eb175f8731a5d5f56156bc486d400e427bfc9
Author: Philip Chimento <philip chimento gmail com>
Date:   Mon May 3 22:05:49 2021 -0700

    arg-cache: Fix rebase collision
    
    This was a more recent change than the branch that was just merged.
    
    Unreviewed, pushing to fix build.

 gi/arg-cache.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gi/arg-cache.cpp b/gi/arg-cache.cpp
index 8889e798..6fb1e1f0 100644
--- a/gi/arg-cache.cpp
+++ b/gi/arg-cache.cpp
@@ -1399,7 +1399,7 @@ static void gjs_arg_cache_build_interface_in_arg(GjsArgumentCache* self,
                 !g_struct_info_is_gtype_struct(interface_info)) {
                 // This covers cases such as GTypeInstance
                 self->marshallers = &fallback_in_marshallers;
-                return true;
+                return;
             }
 
             self->contents.object.gtype = gtype;