Update to match simplified llvm MemoryBuffer interfaces for files.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49042 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/TranslationUnit.cpp b/lib/AST/TranslationUnit.cpp
index b91448b..fdc37a8 100644
--- a/lib/AST/TranslationUnit.cpp
+++ b/lib/AST/TranslationUnit.cpp
@@ -126,8 +126,7 @@
   
   // Create the memory buffer that contains the contents of the file.  
   llvm::OwningPtr<llvm::MemoryBuffer> 
-    MBuffer(llvm::MemoryBuffer::getFile(Filename.c_str(),
-                                        strlen(Filename.c_str())));
+    MBuffer(llvm::MemoryBuffer::getFile(Filename.c_str()));
   
   if (!MBuffer) {
     // FIXME: Provide diagnostic.