Fix ProfileNodeFindOrAddChildForSameFunction test on Win32 debug.

test/cctest/test-profile-generator.cc

Index: test/cctest/test-profile-generator.cc
diff --git a/test/cctest/test-profile-generator.cc b/test/cctest/test-profile-generator.cc
index d8f1c10917fd965bf38fa41734050b20fe6e8cf6..f46191a22a039c472ab6e2b65252af87192e80fa 100644
--- a/test/cctest/test-profile-generator.cc
+++ b/test/cctest/test-profile-generator.cc
@@ -90,18 +90,20 @@ TEST(ProfileNodeFindOrAddChild) {
 
 
 TEST(ProfileNodeFindOrAddChildForSameFunction) {
+  const char* empty = "";
+  const char* aaa = "aaa";
   ProfileNode node(NULL, NULL);
-  CodeEntry entry1(i::Logger::FUNCTION_TAG, "", "aaa", "", 0,
+  CodeEntry entry1(i::Logger::FUNCTION_TAG, empty, aaa, empty, 0,
                      TokenEnumerator::kNoSecurityToken);
   ProfileNode* childNode1 = node.FindOrAddChild(&entry1);
   CHECK_NE(NULL, childNode1);
   CHECK_EQ(childNode1, node.FindOrAddChild(&entry1));
   // The same function again.
-  CodeEntry entry2(i::Logger::FUNCTION_TAG, "", "aaa", "", 0,
+  CodeEntry entry2(i::Logger::FUNCTION_TAG, empty, aaa, empty, 0,
                    TokenEnumerator::kNoSecurityToken);
   CHECK_EQ(childNode1, node.FindOrAddChild(&entry2));
   // Now with a different security token.
-  CodeEntry entry3(i::Logger::FUNCTION_TAG, "", "aaa", "", 0,
+  CodeEntry entry3(i::Logger::FUNCTION_TAG, empty, aaa, empty, 0,
                    TokenEnumerator::kNoSecurityToken + 1);
   CHECK_EQ(childNode1, node.FindOrAddChild(&entry3));
 }