Add default empty header filter regex to root .clang-tidy (#167386)

vbvictor · web-flow · commit ad9eb0d01649 · 2025-11-11T01:36:25.000+03:00
After llvm/llvm-project#164165, we emit warnings from non-system headers by default. This change only preserves functionality of `clang-tidy` as it was before the change.
diff --git a/.clang-tidy b/.clang-tidy
@@ -1,3 +1,4 @@
+HeaderFilterRegex: ''
 Checks: >
   -*,
   clang-diagnostic-*,

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+HeaderFilterRegex: ''`
`1`	`2`	`Checks: >`
`2`	`3`	`-*,`
`3`	`4`	`clang-diagnostic-*,`