[clang] [Serialization] Use llvm::map_range (NFC) (PR #135990)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/135990.diff


1 Files Affected:

- (modified) clang/lib/Serialization/MultiOnDiskHashTable.h (+3-5) 


``````````diff
diff --git a/clang/lib/Serialization/MultiOnDiskHashTable.h b/clang/lib/Serialization/MultiOnDiskHashTable.h
index fa18a29a9a98e..6378f1607d334 100644
--- a/clang/lib/Serialization/MultiOnDiskHashTable.h
+++ b/clang/lib/Serialization/MultiOnDiskHashTable.h
@@ -103,11 +103,9 @@ template<typename Info> class MultiOnDiskHashTable {
 
   /// The current set of on-disk tables.
   table_range tables() {
-    auto Begin = Tables.begin(), End = Tables.end();
-    if (getMergedTable())
-      ++Begin;
-    return llvm::make_range(llvm::map_iterator(Begin, AsOnDiskTable()),
-                            llvm::map_iterator(End, AsOnDiskTable()));
+    bool DropBegin = getMergedTable();
+    return llvm::map_range(llvm::drop_begin(Tables, DropBegin),
+                           AsOnDiskTable());
   }
 
   MergedTable *getMergedTable() const {

``````````

</details>


https://github.com/llvm/llvm-project/pull/135990