Fix an OOM issue.

comfy/ldm/modules/diffusionmodules/openaimodel.py

@@ -786,6 +786,7 @@ class UNetModel(nn.Module):
             if control is not None:
                 hsp += control.pop()
             h = th.cat([h, hsp], dim=1)
+            del hsp
             h = module(h, emb, context)
         h = h.type(x.dtype)
         if self.predict_codebook_ids: