Prevent a NULL deref.

Patch by Rachel Blum <groby@chromium.org>

R=mnaganov@chromium.org

Review URL: http://codereview.chromium.org/7218036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8384 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/log.cc

@@ -396,8 +396,10 @@ class Logger::NameMap {
 
   void Remove(Address code_address) {
     HashMap::Entry* entry = FindEntry(code_address);
-    if (entry != NULL) DeleteArray(static_cast<const char*>(entry->value));
-    RemoveEntry(entry);
+    if (entry != NULL) {
+      DeleteArray(static_cast<char*>(entry->value));
+      RemoveEntry(entry);
+    }
   }
 
   void Move(Address from, Address to) {