Do not throw SIGINT after catching SIGINT signal (#128)

This fixes:
https://github.com/ArthurSonzogni/FTXUI/issues/117

src/ftxui/component/screen_interactive_test.cpp

@@ -0,0 +1,52 @@
+#include <gtest/gtest-message.h>    // for Message
+#include <gtest/gtest-test-part.h>  // for TestPartResult
+#include <csignal>
+
+#include "ftxui/component/component.hpp"
+#include "ftxui/component/screen_interactive.hpp"
+#include "ftxui/dom/elements.hpp"
+#include "gtest/gtest_pred_impl.h"  // for AssertionResult, Test, EXPECT_EQ
+
+using namespace ftxui;
+
+namespace {
+bool TestSignal(int signal) {
+  int called = 0;
+  // The tree of components. This defines how to navigate using the keyboard.
+  auto component = Renderer([&] {
+    called++;
+    std::raise(signal);
+    called++;
+    return text(L"");
+  });
+
+  auto screen = ScreenInteractive::FitComponent();
+  screen.Loop(component);
+
+  EXPECT_EQ(called, 2);
+  return true;
+}
+}  // namespace
+
+TEST(ScreenInteractive, Signal_SIGTERM) {
+  TestSignal(SIGTERM);
+}
+TEST(ScreenInteractive, Signal_SIGSEGV) {
+  TestSignal(SIGSEGV);
+}
+TEST(ScreenInteractive, Signal_SIGINT) {
+  TestSignal(SIGINT);
+}
+TEST(ScreenInteractive, Signal_SIGILL) {
+  TestSignal(SIGILL);
+}
+TEST(ScreenInteractive, Signal_SIGABRT) {
+  TestSignal(SIGABRT);
+}
+TEST(ScreenInteractive, Signal_SIGFPE) {
+  TestSignal(SIGFPE);
+}
+
+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.