[llvm] [BPF] Use heterogeneous lookup with std::map (NFC) (PR #143395)

[Shilei Tian via llvm-commits]

================
@@ -300,7 +300,8 @@ class BTFDebug : public DebugHandlerBase {
   std::map<uint32_t, std::vector<BTFLineInfo>> LineInfoTable;
   std::map<uint32_t, std::vector<BTFFieldReloc>> FieldRelocTable;
   StringMap<std::vector<std::string>> FileContent;
-  std::map<std::string, std::unique_ptr<BTFKindDataSec>> DataSecEntries;
+  std::map<std::string, std::unique_ptr<BTFKindDataSec>, std::less<>>
----------------
shiltian wrote:

this change seems irrelevant?

https://github.com/llvm/llvm-project/pull/143395