[clang-tools-extra] [clang-tidy] Add new check 'misc-scope-reduction' (PR #175429)

[Oliver Stöneberg via cfe-commits]

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@@ -0,0 +1,194 @@
+// RUN: %check_clang_tidy %s misc-scope-reduction %t -- --
+
+// Test case 1: Variable can be moved to smaller scope (if-block)
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firewave wrote:

No need to number the test cases.

https://github.com/llvm/llvm-project/pull/175429