intel/batch_decoder: assert on invalid sampler pointer

Signed-off-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9707>

src/intel/common/intel_batch_decoder.c

@@ -351,6 +351,7 @@ dump_samplers(struct intel_batch_decode_ctx *ctx, uint32_t offset, int count)
 
    if (count * sampler_state_size >= bo.size) {
       fprintf(ctx->fp, "  sampler state ends after bo ends\n");
+      assert(!"sampler state ends after bo ends");
       return;
    }