Fix typo from commit a9d4bc5. (Autocomplete fail)

fpdfsdk/src/fpdfdoc_embeddertest.cpp

 // Copyright 2015 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "../../public/fpdf_doc.h"
 #include "../../public/fpdfview.h"
 #include "../../testing/embedder_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class FPDFDocEmbeddertest : public EmbedderTest {};
@@ skipping 32 matching lines @@
   ASSERT_TRUE(page);
 
   // The target action is nearly the size of the whole page.
   FPDF_LINK link = FPDFLink_GetLinkAtPoint(page, 100, 100);
   ASSERT_TRUE(link);
 
   FPDF_ACTION action = FPDFLink_GetAction(link);
   ASSERT_TRUE(action);
 
   const char kExpectedResult[] = "test.pdf";
-  const unsigned long kExpectedLength = sizeof(kExpectedLength);
+  const unsigned long kExpectedLength = sizeof(kExpectedResult);
   unsigned long bufsize = FPDFAction_GetFilePath(action, nullptr, 0);
   ASSERT_EQ(kExpectedLength, bufsize);
 
   char buf[kExpectedLength];
   EXPECT_EQ(bufsize, FPDFAction_GetFilePath(action, buf, bufsize));
   EXPECT_EQ(std::string(kExpectedResult), std::string(buf));
 
   FPDF_ClosePage(page);
 }