[clangd] Fix buildbot error.

llvm-svn: 334812
diff --git a/clang-tools-extra/clangd/CodeComplete.cpp b/clang-tools-extra/clangd/CodeComplete.cpp
index 0bec281..dc2a603 100644
--- a/clang-tools-extra/clangd/CodeComplete.cpp
+++ b/clang-tools-extra/clangd/CodeComplete.cpp
@@ -858,7 +858,7 @@
         // calculate the file proximity, which would capture include/ and src/
         // project setup where headers and implementations are not in the same
         // directory.
-        FileProximityMatch({FileName}) {}
+        FileProximityMatch(ArrayRef<StringRef>({FileName})) {}
 
   CompletionList run(const SemaCompleteInput &SemaCCInput) && {
     trace::Span Tracer("CodeCompleteFlow");