Remove implicit cast from CFX_WideString to (const wchar_t*)

BUG=

Review URL: https://codereview.chromium.org/1882043004
diff --git a/fpdfsdk/javascript/PublicMethods.cpp b/fpdfsdk/javascript/PublicMethods.cpp
index d03f671..9f7b60f 100644
--- a/fpdfsdk/javascript/PublicMethods.cpp
+++ b/fpdfsdk/javascript/PublicMethods.cpp
@@ -1654,7 +1654,7 @@
   }
   CFX_WideString ws = params[0].ToCFXWideString();
   ws.Replace(L",", L".");
-  vRet = ws;
+  vRet = ws.c_str();
   vRet.MaybeCoerceToNumber();
   if (vRet.GetType() != CJS_Value::VT_number)
     vRet = 0;
diff --git a/fpdfsdk/javascript/public_methods_embeddertest.cpp b/fpdfsdk/javascript/public_methods_embeddertest.cpp
index 153b3cd..1fc967b 100644
--- a/fpdfsdk/javascript/public_methods_embeddertest.cpp
+++ b/fpdfsdk/javascript/public_methods_embeddertest.cpp
@@ -113,56 +113,56 @@
 
   // 1968-06-25
   formatted_date = CJS_PublicMethods::MakeFormatDate(-47952000000, L"ddmmyy");
-  EXPECT_STREQ(L"250668", formatted_date);
+  EXPECT_STREQ(L"250668", formatted_date.c_str());
   formatted_date = CJS_PublicMethods::MakeFormatDate(-47952000000, L"yy/mm/dd");
-  EXPECT_STREQ(L"68/06/25", formatted_date);
+  EXPECT_STREQ(L"68/06/25", formatted_date.c_str());
 
   // 1969-12-31
   formatted_date = CJS_PublicMethods::MakeFormatDate(-0.0001, L"ddmmyy");
-  EXPECT_STREQ(L"311269", formatted_date);
+  EXPECT_STREQ(L"311269", formatted_date.c_str());
   formatted_date = CJS_PublicMethods::MakeFormatDate(-0.0001, L"yy!mmdd");
-  EXPECT_STREQ(L"69!1231", formatted_date);
+  EXPECT_STREQ(L"69!1231", formatted_date.c_str());
 
   // 1970-01-01
   formatted_date = CJS_PublicMethods::MakeFormatDate(0, L"ddmmyy");
-  EXPECT_STREQ(L"010170", formatted_date);
+  EXPECT_STREQ(L"010170", formatted_date.c_str());
   formatted_date = CJS_PublicMethods::MakeFormatDate(0, L"mm-yyyy-dd");
-  EXPECT_STREQ(L"01-1970-01", formatted_date);
+  EXPECT_STREQ(L"01-1970-01", formatted_date.c_str());
 
   // 1985-12-31
   formatted_date = CJS_PublicMethods::MakeFormatDate(504835200000.0, L"ddmmyy");
-  EXPECT_STREQ(L"311285", formatted_date);
+  EXPECT_STREQ(L"311285", formatted_date.c_str());
   formatted_date = CJS_PublicMethods::MakeFormatDate(504835200000.0, L"yymmdd");
-  EXPECT_STREQ(L"851231", formatted_date);
+  EXPECT_STREQ(L"851231", formatted_date.c_str());
 
   // 1995-02-01
   formatted_date = CJS_PublicMethods::MakeFormatDate(791596800000.0, L"ddmmyy");
-  EXPECT_STREQ(L"010295", formatted_date);
+  EXPECT_STREQ(L"010295", formatted_date.c_str());
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(791596800000.0, L"yyyymmdd");
-  EXPECT_STREQ(L"19950201", formatted_date);
+  EXPECT_STREQ(L"19950201", formatted_date.c_str());
 
   // 2005-02-01
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(1107216000000.0, L"ddmmyy");
-  EXPECT_STREQ(L"010205", formatted_date);
+  EXPECT_STREQ(L"010205", formatted_date.c_str());
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(1107216000000.0, L"yyyyddmm");
-  EXPECT_STREQ(L"20050102", formatted_date);
+  EXPECT_STREQ(L"20050102", formatted_date.c_str());
 
   // 2085-12-31
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(3660595200000.0, L"ddmmyy");
-  EXPECT_STREQ(L"311285", formatted_date);
+  EXPECT_STREQ(L"311285", formatted_date.c_str());
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(3660595200000.0, L"yyyydd");
-  EXPECT_STREQ(L"208531", formatted_date);
+  EXPECT_STREQ(L"208531", formatted_date.c_str());
 
   // 2095-02-01
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(3947356800000.0, L"ddmmyy");
-  EXPECT_STREQ(L"010295", formatted_date);
+  EXPECT_STREQ(L"010295", formatted_date.c_str());
   formatted_date =
       CJS_PublicMethods::MakeFormatDate(3947356800000.0, L"mmddyyyy");
-  EXPECT_STREQ(L"02012095", formatted_date);
+  EXPECT_STREQ(L"02012095", formatted_date.c_str());
 }
diff --git a/fpdfsdk/javascript/util.cpp b/fpdfsdk/javascript/util.cpp
index adaa9c7..4f2d834 100644
--- a/fpdfsdk/javascript/util.cpp
+++ b/fpdfsdk/javascript/util.cpp
@@ -312,7 +312,8 @@
     sError = JSGetStringFromID((CJS_Context*)cc, IDS_STRING_JSPARAMERROR);
     return FALSE;
   }
-  vRet = printx(params[0].ToCFXWideString(), params[1].ToCFXWideString());
+  vRet =
+      printx(params[0].ToCFXWideString(), params[1].ToCFXWideString()).c_str();
   return TRUE;
 }