Avoid duplicate paths for zip install

UI/InstallZipScreen.cpp

@@ -117,6 +117,16 @@ void InstallZipScreen::CreateSettingsViews(UI::ViewGroup *parent) {
 	}
 }
 
+template<class T>
+bool Contains(const std::vector<T> &vec, const T &needle) {
+	for (const auto &item : vec) {
+		if (item == needle) {
+			return true;
+		}
+	}
+	return false;
+}
+
 void InstallZipScreen::CreateContentViews(UI::ViewGroup *parent) {
 	using namespace UI;
 
@@ -161,9 +171,13 @@ void InstallZipScreen::CreateContentViews(UI::ViewGroup *parent) {
 				destFolders_.push_back(parent);
 			}
 			if (g_Config.currentDirectory.IsLocalType() && File::Exists(g_Config.currentDirectory) && g_Config.currentDirectory != parent) {
-				destFolders_.push_back(g_Config.currentDirectory);
+				if (!Contains(destFolders_, g_Config.currentDirectory)) {
+					destFolders_.push_back(g_Config.currentDirectory);
+				}
+			}
+			if (!Contains(destFolders_, g_Config.memStickDirectory)) {
+				destFolders_.push_back(g_Config.memStickDirectory);
 			}
-			destFolders_.push_back(g_Config.memStickDirectory);
 		} else {
 			destFolders_.push_back(GetSysDirectory(DIRECTORY_GAME));
 		}