Simplify.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/HeaderSearch.cpp b/lib/Lex/HeaderSearch.cpp
index 39b49a3..383d9b4 100644
--- a/lib/Lex/HeaderSearch.cpp
+++ b/lib/Lex/HeaderSearch.cpp
@@ -305,8 +305,7 @@
 
     // If the framework dir doesn't exist, we fail.
     // FIXME: It's probably more efficient to query this with FileMgr.getDir.
-    bool Exists;
-    if (llvm::sys::fs::exists(FrameworkName.str(), Exists) || !Exists)
+    if (!llvm::sys::fs::exists(FrameworkName.str()))
       return 0;
 
     // Otherwise, if it does, remember that this is the right direntry for this