Reduce allocation size of FormData::m_entries.

Source/web/WebSearchableFormData.cpp

Index: Source/web/WebSearchableFormData.cpp
diff --git a/Source/web/WebSearchableFormData.cpp b/Source/web/WebSearchableFormData.cpp
index ea4b0ec87bb8eff1c26f93544eab7dfbdba2e709..cd380921c6f30bc1fc874292a55ca35d4b449116 100644
--- a/Source/web/WebSearchableFormData.cpp
+++ b/Source/web/WebSearchableFormData.cpp
@@ -216,13 +216,13 @@ bool buildSearchString(const HTMLFormElement& form, Vector<char>* encodedString,
         for (const auto& entry : formData->entries()) {
             if (!encodedString->isEmpty())
                 encodedString->append('&');
-            FormDataEncoder::encodeStringAsFormData(*encodedString, entry.key());
+            FormDataEncoder::encodeStringAsFormData(*encodedString, entry->key());
             encodedString->append('=');
             if (&control == textElement) {
                 encodedString->append("{searchTerms}", 13);
                 isElementFound = true;
             } else {
-                FormDataEncoder::encodeStringAsFormData(*encodedString, entry.data());
+                FormDataEncoder::encodeStringAsFormData(*encodedString, entry->data());
             }
         }
     }