[mutter] backends: Plug leaks

[Carlos Garnacho <carlosg src gnome org>]

commit eb236649fc843dfd07ba18412f1be7b033923df3
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Nov 6 20:39:56 2017 +0100

    backends: Plug leaks
    
    The DRM properties container must be destroyed with
    drmModeFreeObjectProperties, and the connectors must be freed on every
    caller. Also make it sure that gbm_device structs are destroyed with the
    MetaRendererNativeGpuData that owns them.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=789984

 src/backends/native/meta-crtc-kms.c        |    2 ++
 src/backends/native/meta-gpu-kms.c         |    2 ++
 src/backends/native/meta-renderer-native.c |    1 +
 3 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/native/meta-crtc-kms.c b/src/backends/native/meta-crtc-kms.c
index 29b8280..492734e 100644
--- a/src/backends/native/meta-crtc-kms.c
+++ b/src/backends/native/meta-crtc-kms.c
@@ -304,6 +304,8 @@ find_crtc_properties (MetaCrtc   *crtc,
 
       drmModeFreeProperty (prop);
     }
+
+  drmModeFreeObjectProperties (props);
 }
 
 static void
diff --git a/src/backends/native/meta-gpu-kms.c b/src/backends/native/meta-gpu-kms.c
index 38c2e9b..2d17af7 100644
--- a/src/backends/native/meta-gpu-kms.c
+++ b/src/backends/native/meta-gpu-kms.c
@@ -141,6 +141,7 @@ meta_gpu_kms_apply_crtc_mode (MetaGpuKms *gpu_kms,
                       mode) != 0)
     {
       g_warning ("Failed to set CRTC mode %s: %m", crtc->current_mode->name);
+      g_free (connectors);
       return FALSE;
     }
 
@@ -224,6 +225,7 @@ meta_gpu_kms_flip_crtc (MetaGpuKms *gpu_kms,
 
   get_crtc_drm_connectors (gpu, crtc, &connectors, &n_connectors);
   g_assert (n_connectors > 0);
+  g_free (connectors);
 
   if (!gpu_kms->page_flips_not_supported)
     {
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 6137908..f6c3589 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -243,6 +243,7 @@ meta_renderer_native_gpu_data_free (MetaRendererNativeGpuData *renderer_gpu_data
   if (renderer_gpu_data->egl_display != EGL_NO_DISPLAY)
     meta_egl_terminate (egl, renderer_gpu_data->egl_display, NULL);
 
+  g_clear_pointer (&renderer_gpu_data->gbm.device, gbm_device_destroy);
   g_free (renderer_gpu_data);
 }