Kill some unnecessary c_str and use StrToWxStr in a few places that I missed.

Source/Core/DolphinWX/Src/FrameTools.cpp

@@ -101,7 +101,7 @@ void CFrame::CreateMenu()
 	drives = cdio_get_devices();
 	// Windows Limitation of 24 character drives
 	for (unsigned int i = 0; i < drives.size() && i < 24; i++) {
-		externalDrive->Append(IDM_DRIVE1 + i, StrToWxStr(drives[i].c_str()));
+		externalDrive->Append(IDM_DRIVE1 + i, StrToWxStr(drives[i]));
 	}
 
 	fileMenu->AppendSeparator();