Fix output string of pepper_hash_for_uma.

ppapi/tools/pepper_hash_for_uma.cc

Index: ppapi/tools/pepper_hash_for_uma.cc
diff --git a/ppapi/tools/pepper_hash_for_uma.cc b/ppapi/tools/pepper_hash_for_uma.cc
index 758d5ba3056b5033de93464d7dc8d2ff8d2a552d..6e38cfdd4b6483c7fe879cc50e17f4dd401a3037 100644
--- a/ppapi/tools/pepper_hash_for_uma.cc
+++ b/ppapi/tools/pepper_hash_for_uma.cc
@@ -31,7 +31,7 @@ int main(int argc, char **argv) {
     // Strip off the signed bit because UMA doesn't support negative values,
     // but takes a signed int as input.
     int hash = static_cast<int>(data & 0x7fffffff);
-    printf("<int value=\"%d\" label=\"%s\">\n", hash, argv[i]);
+    printf("<int value=\"%d\" label=\"%s\"/>\n", hash, argv[i]);
   }
   return 0;
 }