Update for LLVM API change

llvm-svn: 222303
diff --git a/clang/lib/Frontend/DependencyFile.cpp b/clang/lib/Frontend/DependencyFile.cpp
index 08d66c7..6ea8f51 100644
--- a/clang/lib/Frontend/DependencyFile.cpp
+++ b/clang/lib/Frontend/DependencyFile.cpp
@@ -109,7 +109,7 @@
 void DependencyCollector::maybeAddDependency(StringRef Filename, bool FromModule,
                                             bool IsSystem, bool IsModuleFile,
                                             bool IsMissing) {
-  if (Seen.insert(Filename) &&
+  if (Seen.insert(Filename).second &&
       sawDependency(Filename, FromModule, IsSystem, IsModuleFile, IsMissing))
     Dependencies.push_back(Filename);
 }
@@ -285,7 +285,7 @@
 }
 
 void DFGImpl::AddFilename(StringRef Filename) {
-  if (FilesSet.insert(Filename))
+  if (FilesSet.insert(Filename).second)
     Files.push_back(Filename);
 }