Merge "ui: join only if joinable."

screen_ui.cpp

@@ -173,7 +173,9 @@ ScreenRecoveryUI::ScreenRecoveryUI(bool scrollable_menu)
 
 ScreenRecoveryUI::~ScreenRecoveryUI() {
   progress_thread_stopped_ = true;
-  progress_thread_.join();
+  if (progress_thread_.joinable()) {
+    progress_thread_.join();
+  }
 }
 
 GRSurface* ScreenRecoveryUI::GetCurrentFrame() const {

tests/unit/screen_ui_test.cpp

@@ -293,6 +293,11 @@ TEST_F(ScreenRecoveryUITest, Init) {
   ASSERT_FALSE(ui_->WasTextEverVisible());
 }
 
+TEST_F(ScreenRecoveryUITest, dtor_NotCallingInit) {
+  ui_.reset();
+  ASSERT_FALSE(ui_);
+}
+
 TEST_F(ScreenRecoveryUITest, ShowText) {
   ASSERT_TRUE(ui_->Init(kTestLocale));
   ASSERT_FALSE(ui_->IsTextVisible());

ui.cpp

@@ -78,7 +78,9 @@ RecoveryUI::RecoveryUI()
 RecoveryUI::~RecoveryUI() {
   ev_exit();
   input_thread_stopped_ = true;
-  input_thread_.join();
+  if (input_thread_.joinable()) {
+    input_thread_.join();
+  }
 }
 
 void RecoveryUI::OnKeyDetected(int key_code) {