[gnome-builder] build: fix error message for libgit2

[Christian Hergert <chergert src gnome org>]

commit 2de6f83b4ac6b685e54aa35fd3436c22e876d234
Author: Christian Hergert <chergert redhat com>
Date:   Fri Feb 11 13:55:42 2022 -0800

    build: fix error message for libgit2

 src/plugins/git/daemon/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/git/daemon/meson.build b/src/plugins/git/daemon/meson.build
index 368326adf..126d731dc 100644
--- a/src/plugins/git/daemon/meson.build
+++ b/src/plugins/git/daemon/meson.build
@@ -14,7 +14,7 @@ res = cc.run(libgit_thread_safe_check,
 dependencies: libgit2_glib_dep,
 )
 if res.returncode() != 0
-error('libgit2 was not compiled with -DTHREADSAFE:BOOL=ON')
+error('libgit2 was not compiled with -DUSE_THREADS:BOOL=ON')
 endif
 
 libgit_ssh_check = '''