[compiler-rt] [rtsan] Add support for ReportErrorSummary (PR #116424)

[via llvm-commits]

================
@@ -39,20 +39,22 @@ class Decorator : public SanitizerCommonDecorator {
 };
 } // namespace
 
+const char *GetErrorTypeStr(const DiagnosticsInfo &info) {
----------------
davidtrevelyan wrote:

Shouldn't this function be declared `static`?

https://github.com/llvm/llvm-project/pull/116424