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/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 9f6624c..d7d2c84 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -43,8 +43,7 @@
   
   // Nope, get information.
   const MemoryBuffer *File =
-    MemoryBuffer::getFile(FileEnt->getName(), strlen(FileEnt->getName()), 0,
-                          FileEnt->getSize());
+    MemoryBuffer::getFile(FileEnt->getName(), 0, FileEnt->getSize());
   if (File == 0)
     return 0;