Eevee Cryptomatte: Store hashes in render result meta data

Stores cryptomatte hashes as meta data to the render result. Compositors could
use this for lookup on names in stead of hashes.

Differential Revision: https://developer.blender.org/D9553

source/blender/draw/engines/eevee/eevee_render.c

@@ -510,7 +510,6 @@ static void eevee_render_result_cryptomatte(RenderLayer *rl,
   if ((vedata->stl->g_data->render_passes & EEVEE_RENDER_PASS_CRYPTOMATTE) != 0) {
     EEVEE_cryptomatte_render_result(rl, viewname, rect, vedata, sldata);
   }
-  EEVEE_cryptomatte_free(vedata);
 }
 
 static void eevee_render_draw_background(EEVEE_Data *vedata)