Remove incorrect ScriptException::Clear function

This function doesn't free the references, and causes us to leak
the excepinfo strings. Instead use Free in the two places where we
do call this, and remove the function to prevent future use.

Author: Penguinwizzard

lib/Parser/screrror.cpp

@@ -227,11 +227,6 @@ CompileScriptException::~CompileScriptException()
     SysFreeString(bstrLine);
 }
 
-void CompileScriptException::Clear()
-{
-    memset(this, 0, sizeof(*this));
-}
-
 void CompileScriptException::Free()
 {
     ScriptException::Free();
@@ -246,7 +241,7 @@ void CompileScriptException::Free()
 HRESULT  CompileScriptException::ProcessError(IScanner * pScan, HRESULT hr, ParseNode * pnodeBase)
 {
     // fill in the ScriptException structure
-    Clear();
+    Free();
     ei.scode = GetScode(MapHr(hr));
 
     // get the error string

lib/Parser/screrror.h

@@ -63,7 +63,6 @@ class CompileScriptException : public ScriptException
     ~CompileScriptException();
 
 public:
-    void Clear();
     void Free();
     void GetError(HRESULT *phr, EXCEPINFO *pei)
     {

lib/Runtime/Base/ScriptContext.cpp

@@ -1950,7 +1950,7 @@ namespace Js
             {
                 Assert((loadScriptFlag & LoadScriptFlag_disableAsmJs) != LoadScriptFlag_disableAsmJs);
 
-                pse->Clear();
+                pse->Free();
 
                 loadScriptFlag = (LoadScriptFlag)(loadScriptFlag | LoadScriptFlag_disableAsmJs);
                 return LoadScript(script, cb, pSrcInfo, pse, ppSourceInfo,