[gtk/wip/baedert/for-master] glcontext-wayland: Only allocate configs we use

[Timm Bäder <baedert src gnome org>]

commit 6867b7b715afacaa39bd8c2fa114bfe04495aaa9
Author: Timm Bäder <mail baedert org>
Date:   Thu Dec 24 09:09:35 2020 +0100

    glcontext-wayland: Only allocate configs we use
    
    We only use the first one, so don't allocate space for more than that.

 gdk/wayland/gdkglcontext-wayland.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)
---
diff --git a/gdk/wayland/gdkglcontext-wayland.c b/gdk/wayland/gdkglcontext-wayland.c
index 726ca25f10..b0d19d5a18 100644
--- a/gdk/wayland/gdkglcontext-wayland.c
+++ b/gdk/wayland/gdkglcontext-wayland.c
@@ -387,7 +387,7 @@ find_eglconfig_for_surface (GdkSurface  *surface,
   EGLint attrs[MAX_EGL_ATTRS];
   EGLBoolean result;
   EGLint count;
-  EGLConfig *configs;
+  EGLConfig config;
   int i = 0;
 
   attrs[i++] = EGL_SURFACE_TYPE;
@@ -417,9 +417,8 @@ find_eglconfig_for_surface (GdkSurface  *surface,
       return FALSE;
     }
 
-  configs = g_new (EGLConfig, count);
-
-  result = eglChooseConfig (display_wayland->egl_display, attrs, configs, count, &count);
+  /* Pick first valid configuration i guess? */
+  result = eglChooseConfig (display_wayland->egl_display, attrs, &config, 1, &count);
   if (!result || count < 1)
     {
       g_set_error_literal (error, GDK_GL_ERROR,
@@ -428,12 +427,8 @@ find_eglconfig_for_surface (GdkSurface  *surface,
       return FALSE;
     }
 
-  /* Pick first valid configuration i guess? */
-
-  if (egl_config_out != NULL)
-    *egl_config_out = configs[0];
-
-  g_free (configs);
+  g_assert (egl_config_out);
+  *egl_config_out = config;
 
   return TRUE;
 }