Fix more -Wshorten-64-to-32 warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Statistic.cpp b/lib/Support/Statistic.cpp
index e500b55..4516ebc 100644
--- a/lib/Support/Statistic.cpp
+++ b/lib/Support/Statistic.cpp
@@ -90,7 +90,7 @@
 
   // Figure out how long the biggest Value and Name fields are.
   unsigned MaxNameLen = 0, MaxValLen = 0;
-  for (unsigned i = 0, e = Stats.size(); i != e; ++i) {
+  for (size_t i = 0, e = Stats.size(); i != e; ++i) {
     MaxValLen = std::max(MaxValLen,
                          (unsigned)utostr(Stats[i]->getValue()).size());
     MaxNameLen = std::max(MaxNameLen,
@@ -106,7 +106,7 @@
             << "===" << std::string(73, '-') << "===\n\n";
   
   // Print all of the statistics.
-  for (unsigned i = 0, e = Stats.size(); i != e; ++i) {
+  for (size_t i = 0, e = Stats.size(); i != e; ++i) {
     std::string CountStr = utostr(Stats[i]->getValue());
     OutStream << std::string(MaxValLen-CountStr.size(), ' ')
               << CountStr << " " << Stats[i]->getName()