eg: explicitly size dri2_to_egl_attribute_map[]

This way we'll get an implicit zero initialization of the remaining
members, as required by dri2_add_config().

Fixes: e5efaeb85c3 ("egl: polish dri2_to_egl_attribute_map[]")
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 91456b0..0be7132 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -102,7 +102,7 @@
    .base = { __DRI_USE_INVALIDATE, 1 }
 };
 
-static const EGLint dri2_to_egl_attribute_map[] = {
+static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,