[gnome-builder] meson-templates: use #pragma once for version.h.in

[Christian Hergert <chergert src gnome org>]

commit 135a5d4e8e07756ea93c59e2f5031ce158eca1a6
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 23 13:32:50 2020 -0800

    meson-templates: use #pragma once for version.h.in

 src/plugins/meson-templates/resources/src/hello-version.h.in | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/src/plugins/meson-templates/resources/src/hello-version.h.in 
b/src/plugins/meson-templates/resources/src/hello-version.h.in
index d7d198eff..48ac47db1 100644
--- a/src/plugins/meson-templates/resources/src/hello-version.h.in
+++ b/src/plugins/meson-templates/resources/src/hello-version.h.in
@@ -1,7 +1,6 @@
 {{include "license.h"}}
 
-#ifndef {{NAME}}_VERSION_H
-#define {{NAME}}_VERSION_H
+#pragma once
 
 #if !defined({{NAME}}_INSIDE) && !defined({{NAME}}_COMPILATION)
 # error "Only <{{name}}.h> can be included directly."
@@ -77,5 +76,3 @@
          ({{PREFIX}}_MAJOR_VERSION == (major) && {{PREFIX}}_MINOR_VERSION > (minor)) || \
          ({{PREFIX}}_MAJOR_VERSION == (major) && {{PREFIX}}_MINOR_VERSION == (minor) && \
           {{PREFIX}}_MICRO_VERSION >= (micro)))
-
-#endif /* {{NAME}}_VERSION_H */