Fix a few clang warnings (which -Werror treats as errors)

test/cctest/test-compiler.cc

Index: test/cctest/test-compiler.cc
diff --git a/test/cctest/test-compiler.cc b/test/cctest/test-compiler.cc
index 8f226f6cde8b40f6ca24ebd5e44928d2d8c6c2d4..2d9b01204a8cebcbb26787da973fa77cd377cb00 100644
--- a/test/cctest/test-compiler.cc
+++ b/test/cctest/test-compiler.cc
@@ -26,7 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdlib.h>
-#include <wchar.h>  // wint_t
+#include <wchar.h>
 
 #include "v8.h"
 
@@ -75,7 +75,7 @@ v8::Handle<v8::Value> PrintExtension::Print(const v8::Arguments& args) {
     uint16_t* string = NewArray<uint16_t>(length + 1);
     string_obj->Write(string);
     for (int j = 0; j < length; j++)
-      printf("%lc", static_cast<wint_t>(string[j]));
+      printf("%lc", static_cast<wchar_t>(string[j]));
     DeleteArray(string);
   }
   printf("\n");