Avoid reusing TYPE parameter in AT_DISPATCH macros. (#19968)
Summary:
From the comment: "don't use TYPE again in case it is an expensive or side-effect op"
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19968
Differential Revision: D15151567
Pulled By: gchanan
fbshipit-source-id: 4d42c081ac1472b71f1cea5172cb42a7c83a7043
