[mutter] renderer-native: Fix memory leak in secondary GPU update

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 545fcb3dbff00adf1899012524926730a8c23572
Author: Adam Jackson <ajax redhat com>
Date:   Fri Jan 17 11:28:48 2020 -0500

    renderer-native: Fix memory leak in secondary GPU update
    
    Leaking a texture object and a framebuffer object every time you update
    the secondary GPU is perhaps not the best plan.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/1011

 src/backends/native/meta-renderer-native-gles3.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/backends/native/meta-renderer-native-gles3.c 
b/src/backends/native/meta-renderer-native-gles3.c
index 740b52ef6..43394cc64 100644
--- a/src/backends/native/meta-renderer-native-gles3.c
+++ b/src/backends/native/meta-renderer-native-gles3.c
@@ -82,6 +82,9 @@ paint_egl_image (MetaGles3   *gles3,
                                     0, 0, width, height,
                                     GL_COLOR_BUFFER_BIT,
                                     GL_NEAREST));
+
+  GLBAS (gles3, glDeleteTextures, (1, &texture));
+  GLBAS (gles3, glDeleteFramebuffers, (1, &framebuffer));
 }
 
 gboolean