Squelch warning


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5494 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Timer.cpp b/lib/Support/Timer.cpp
index 8023c50..3a81fc4 100644
--- a/lib/Support/Timer.cpp
+++ b/lib/Support/Timer.cpp
@@ -89,7 +89,7 @@
 static TimeRecord getTimeRecord(bool Start) {
   struct rusage RU;
   struct timeval T;
-  long MemUsed;
+  long MemUsed = 0;
   if (Start) {
     MemUsed = getMemUsage();
     if (getrusage(RUSAGE_SELF, &RU))