counter should be unsigned.

llvm-svn: 32252
diff --git a/llvm/lib/Transforms/Hello/Hello.cpp b/llvm/lib/Transforms/Hello/Hello.cpp
index e02406d..a91360f 100644
--- a/llvm/lib/Transforms/Hello/Hello.cpp
+++ b/llvm/lib/Transforms/Hello/Hello.cpp
@@ -21,7 +21,7 @@
 using namespace llvm;
 
 namespace {
-  Statistic<int> HelloCounter("hellocount",
+  Statistic<> HelloCounter("hellocount",
       "Counts number of functions greeted");
   // Hello - The first implementation, without getAnalysisUsage.
   struct Hello : public FunctionPass {