[gnome-builder] build: libgit2 should use -DUSE_THREADS:BOOL=ON

[Christian Hergert <chergert src gnome org>]

commit 3c77e9f6a35c5ba7c64d5c19716098d829bf0390
Author: Christian Hergert <chergert redhat com>
Date:   Fri Feb 11 13:52:54 2022 -0800

    build: libgit2 should use -DUSE_THREADS:BOOL=ON

 build-aux/flatpak/org.gnome.Builder.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/build-aux/flatpak/org.gnome.Builder.json b/build-aux/flatpak/org.gnome.Builder.json
index 719c37c2e..06d687005 100644
--- a/build-aux/flatpak/org.gnome.Builder.json
+++ b/build-aux/flatpak/org.gnome.Builder.json
@@ -248,7 +248,7 @@
                 "-DCMAKE_BUILD_TYPE=RelWithDebInfo",
                 "-DBUILD_SHARED_LIBS:BOOL=ON",
                 "-DUSE_SSH=ON",
-                "-DUSE_THREADS=ON"
+                "-DUSE_THREADS:BOOL=ON"
             ],
             "sources" : [
                 {