Fix typo from commit a9d4bc5. (Autocomplete fail)

fpdfsdk/src/fpdfdoc_embeddertest.cpp

Index: fpdfsdk/src/fpdfdoc_embeddertest.cpp
diff --git a/fpdfsdk/src/fpdfdoc_embeddertest.cpp b/fpdfsdk/src/fpdfdoc_embeddertest.cpp
index 553e9009f882f50a75fdbf8e82a5134679732cd9..8b1c4fb3e83dc84c0e6c2f5d9e1c5a2d87ee0086 100644
--- a/fpdfsdk/src/fpdfdoc_embeddertest.cpp
+++ b/fpdfsdk/src/fpdfdoc_embeddertest.cpp
@@ -50,7 +50,7 @@ TEST_F(FPDFDocEmbeddertest, ActionGetFilePath) {
   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);