Fix compilation problem with some versions of G++

llvm-svn: 6660
diff --git a/llvm/lib/Support/Timer.cpp b/llvm/lib/Support/Timer.cpp
index 85114b5..625653a 100644
--- a/llvm/lib/Support/Timer.cpp
+++ b/llvm/lib/Support/Timer.cpp
@@ -235,7 +235,7 @@
     return &std::cout;
 
   std::ostream *Result = new std::ofstream(LibSupportInfoOutputFilename.c_str(),
-                                           std::ios_base::app);
+                                           std::ios::app);
   if (!Result->good()) {
     std::cerr << "Error opening info-output-file '"
               << LibSupportInfoOutputFilename << " for appending!\n";