[gnome-builder] code-index: allow cpphdr usage

[Christian Hergert <chergert src gnome org>]

commit e4af04e130757ead5240e07c6aacba6f4f6ddffa
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jan 30 11:48:36 2019 -0800

    code-index: allow cpphdr usage

 src/plugins/code-index/code-index.plugin | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/code-index/code-index.plugin b/src/plugins/code-index/code-index.plugin
index cf807efec..fbb2bd0bb 100644
--- a/src/plugins/code-index/code-index.plugin
+++ b/src/plugins/code-index/code-index.plugin
@@ -7,4 +7,4 @@ Embedded=_ide_code_index_register_types
 Module=code-index
 Name=Code Index
 X-Symbol-Resolver-Languages-Priority=200
-X-Symbol-Resolver-Languages=c,chdr,cpp
+X-Symbol-Resolver-Languages=c,chdr,cpp,cpphdr