[calls] sip: media-pipeline: Add G_BEGIN_DECLS and G_END_DECLS to header

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 19cf2ab92f4da4e50a576c40f6e451aea13650d6
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Fri Feb 25 08:30:27 2022 +0100

    sip: media-pipeline: Add G_BEGIN_DECLS and G_END_DECLS to header

 plugins/sip/calls-sip-media-pipeline.h | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/plugins/sip/calls-sip-media-pipeline.h b/plugins/sip/calls-sip-media-pipeline.h
index 78910342..16ebe192 100644
--- a/plugins/sip/calls-sip-media-pipeline.h
+++ b/plugins/sip/calls-sip-media-pipeline.h
@@ -28,6 +28,8 @@
 
 #include <glib-object.h>
 
+G_BEGIN_DECLS
+
 #define CALLS_TYPE_SIP_MEDIA_PIPELINE (calls_sip_media_pipeline_get_type ())
 
 G_DECLARE_FINAL_TYPE (CallsSipMediaPipeline, calls_sip_media_pipeline, CALLS, SIP_MEDIA_PIPELINE, GObject)
@@ -37,3 +39,5 @@ CallsSipMediaPipeline* calls_sip_media_pipeline_new                    (MediaCod
 void                   calls_sip_media_pipeline_start                  (CallsSipMediaPipeline *self);
 void                   calls_sip_media_pipeline_stop                   (CallsSipMediaPipeline *self);
 void                   calls_sip_media_pipeline_pause                  (CallsSipMediaPipeline *self);
+
+G_END_DECLS