Linux: fix linker type confusion that was causing crash.

The class AdminPasswordRequestHandler was defined in several places in the same namespace and the linker was picking up one definition for constructor and the other one when calling virtual method.

Now we use different named for different implementations.

src/Main/GraphicUserInterface.cpp

@@ -37,6 +37,32 @@
 
 namespace VeraCrypt
 {
+	class AdminPasswordGUIRequestHandler : public GetStringFunctor
+	{
+		public:
+		virtual void operator() (string &passwordStr)
+		{
+
+			wxString sValue;
+			if (Gui->GetWaitDialog())
+			{
+				Gui->GetWaitDialog()->RequestAdminPassword(sValue);
+				if (sValue.IsEmpty())
+					throw UserAbort (SRC_POS);
+			}
+			else
+			{
+				wxPasswordEntryDialog dialog (Gui->GetActiveWindow(), LangString["LINUX_ADMIN_PW_QUERY"], LangString["LINUX_ADMIN_PW_QUERY_TITLE"]);
+				if (dialog.ShowModal() != wxID_OK)
+					throw UserAbort (SRC_POS);
+				sValue = dialog.GetValue();
+			}
+			wstring wPassword (sValue);	// A copy of the password is created here by wxWidgets, which cannot be erased
+			finally_do_arg (wstring *, &wPassword, { StringConverter::Erase (*finally_arg); });
+
+			StringConverter::ToSingle (wPassword, passwordStr);
+		}
+	};
 #ifdef TC_MACOSX
 	int GraphicUserInterface::g_customIdCmdV = 0;
 	int GraphicUserInterface::g_customIdCmdA = 0;
@@ -452,33 +478,7 @@ namespace VeraCrypt
 
 	shared_ptr <GetStringFunctor> GraphicUserInterface::GetAdminPasswordRequestHandler ()
 	{
-		class AdminPasswordRequestHandler : public GetStringFunctor
+		return shared_ptr <GetStringFunctor> (new AdminPasswordGUIRequestHandler);
-		{
-			public:
-			virtual void operator() (string &passwordStr)
-			{
-
-				wxString sValue;
-				if (Gui->GetWaitDialog())
-				{
-					Gui->GetWaitDialog()->RequestAdminPassword(sValue);
-					if (sValue.IsEmpty())
-						throw UserAbort (SRC_POS);
-				}
-				else
-				{
-					wxPasswordEntryDialog dialog (Gui->GetActiveWindow(), LangString["LINUX_ADMIN_PW_QUERY"], LangString["LINUX_ADMIN_PW_QUERY_TITLE"]);
-					if (dialog.ShowModal() != wxID_OK)
-						throw UserAbort (SRC_POS);
-					sValue = dialog.GetValue();
-				}
-				wstring wPassword (sValue);	// A copy of the password is created here by wxWidgets, which cannot be erased
-				finally_do_arg (wstring *, &wPassword, { StringConverter::Erase (*finally_arg); });
-
-				StringConverter::ToSingle (wPassword, passwordStr);
-			}
-		};
-		return shared_ptr <GetStringFunctor> (new AdminPasswordRequestHandler);
 	}
 
 	int GraphicUserInterface::GetCharHeight (wxWindow *window) const

src/Main/TextUserInterface.cpp

@@ -30,10 +30,10 @@
 
 namespace VeraCrypt
 {
-	class AdminPasswordRequestHandler : public GetStringFunctor
+	class AdminPasswordTextRequestHandler : public GetStringFunctor
 	{
 		public:
-		AdminPasswordRequestHandler (TextUserInterface *userInterface) : UI (userInterface) { }
+		AdminPasswordTextRequestHandler (TextUserInterface *userInterface) : UI (userInterface) { }
 		virtual void operator() (string &passwordStr)
 		{
 			UI->ShowString (_("Enter your user password or administrator password: "));
@@ -1116,7 +1116,7 @@ namespace VeraCrypt
 
 	shared_ptr <GetStringFunctor> TextUserInterface::GetAdminPasswordRequestHandler ()
 	{
-		return shared_ptr <GetStringFunctor> (new AdminPasswordRequestHandler (this));
+		return shared_ptr <GetStringFunctor> (new AdminPasswordTextRequestHandler (this));
 	}
 
 	void TextUserInterface::ImportTokenKeyfiles () const

src/Main/TextUserInterface.h

@@ -19,11 +19,11 @@
 
 namespace VeraCrypt
 {
-	class AdminPasswordRequestHandler;
+	class AdminPasswordTextRequestHandler;
 	class TextUserInterface : public UserInterface
 	{
 	public:
-		friend class AdminPasswordRequestHandler;
+		friend class AdminPasswordTextRequestHandler;
 		TextUserInterface ();
 		virtual ~TextUserInterface ();