Initialize syncScriptResult and remove unused parameter

include/wx/webview.h

@@ -139,6 +139,7 @@ public:
     {
         m_showMenu = true;
         m_runScriptCount = 0;
+        m_syncScriptResult = 0;
     }
 
     virtual ~wxWebView() {}

src/common/webview.cpp

@@ -229,7 +229,7 @@ bool wxWebView::RunScript(const wxString& javascript, wxString* output) const
 {
     m_syncScriptResult = -1;
     m_syncScriptOutput.clear();
-    RunScriptAsync(javascript, (void*)this);
+    RunScriptAsync(javascript);
 
     // Wait for script exection
     while (m_syncScriptResult == -1)