[gnome-builder] build-aux: fix fusermount-wrapper.sh for real

[Christian Hergert <chergert src gnome org>]

commit 11e8ca16e09165b0f4881c0bc634fe8bf9c09251
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jul 22 11:42:52 2022 -0700

    build-aux: fix fusermount-wrapper.sh for real
    
    We don't need the prefix at all, it's copied into the build directory for
    us to start with.

 org.gnome.Builder.Devel.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/org.gnome.Builder.Devel.json b/org.gnome.Builder.Devel.json
index aa5b60950..4725d05b0 100644
--- a/org.gnome.Builder.Devel.json
+++ b/org.gnome.Builder.Devel.json
@@ -134,7 +134,7 @@
                 "/bin/ulockmgr_server"
             ],
             "post-install" : [
-                "install -m a+rx ${FLATPAK_BUILDER_BUILDDIR}/build-aux/flatpak/fusermount-wrapper.sh 
/app/bin/fusermount"
+                "install -m a+rx fusermount-wrapper.sh /app/bin/fusermount"
             ],
             "sources" : [
                 {