Make these variables static.

llvm-svn: 50196
diff --git a/llvm/lib/Support/Timer.cpp b/llvm/lib/Support/Timer.cpp
index 6d4a2c2..9cbb3c7 100644
--- a/llvm/lib/Support/Timer.cpp
+++ b/llvm/lib/Support/Timer.cpp
@@ -39,12 +39,12 @@
 }
 
 namespace {
-  cl::opt<bool>
+  static cl::opt<bool>
   TrackSpace("track-memory", cl::desc("Enable -time-passes memory "
                                       "tracking (this may be slow)"),
              cl::Hidden);
 
-  cl::opt<std::string, true>
+  static cl::opt<std::string, true>
   InfoOutputFilename("info-output-file", cl::value_desc("filename"),
                      cl::desc("File to append -stats and -timer output to"),
                    cl::Hidden, cl::location(getLibSupportInfoOutputFilename()));