[clangd] NFC: Migrate to LLVM STLExtras API where possible

This patch improves readability by migrating `std::function(ForwardIt
start, ForwardIt end, ...)` to LLVM's STLExtras range-based equivalent
`llvm::function(RangeT &&Range, ...)`.

Similar change in Clang: D52576.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D52650

llvm-svn: 343937

1 files changed, 1 insertions, 2 deletions

diff --git a/clang-tools-extra/clangd/TUScheduler.cpp b/clang-tools-extra/clangd/TUScheduler.cpp
index 6ac21341f9e..9a5095fd5e7 100644
--- a/clang-tools-extra/clangd/TUScheduler.cpp
+++ b/clang-tools-extra/clangd/TUScheduler.cpp
@@ -128,8 +128,7 @@ private:
   using KVPair = std::pair<Key, std::unique_ptr<ParsedAST>>;
 
   std::vector<KVPair>::iterator findByKey(Key K) {
-    return std::find_if(LRU.begin(), LRU.end(),
-                        [K](const KVPair &P) { return P.first == K; });
+    return llvm::find_if(LRU, [K](const KVPair &P) { return P.first == K; });
   }
 
   std::mutex Mut;