[gnome-software: 2/6] contrib: Add missing header to example plugin

[Philip Withnall <pwithnall src gnome org>]

commit 3b357e489cb0afa6543be2bc92982276ce731dab
Author: Philip Withnall <pwithnall endlessos org>
Date:   Sun Mar 14 16:09:01 2021 +0000

    contrib: Add missing header to example plugin
    
    This was previously pulled in implicitly by including
    `gnome-software.h`, but that’s a bit mystical. Better to include it
    explicitly, since the example plugin uses GLib types in its own code.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Helps: #1168

 contrib/gs-plugin-example.c     | 1 +
 doc/api/gnome-software-docs.xml | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/contrib/gs-plugin-example.c b/contrib/gs-plugin-example.c
index 980a2dcfb..453c7f625 100644
--- a/contrib/gs-plugin-example.c
+++ b/contrib/gs-plugin-example.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include <glib.h>
 #include <gnome-software.h>
 
 /*
diff --git a/doc/api/gnome-software-docs.xml b/doc/api/gnome-software-docs.xml
index d66965fd2..0cd42ce3f 100644
--- a/doc/api/gnome-software-docs.xml
+++ b/doc/api/gnome-software-docs.xml
@@ -76,6 +76,7 @@
  * Copyright (C) 2016 Richard Hughes
  */
 
+#include &lt;glib.h&gt;
 #include &lt;gnome-software.h&gt;
 
 void