[core] Fix MapSnapshotter build failure on Windows

MSVC implementation of std::promise is buggy and only works with types
that can be default-constructed. To avoid a compilation failure in the
instantiation of ask() inside MapSnapshotter::getRegion(), which creates
a std::promise<LanLngBounds>, make LatLngBounds' default constructor
public.

2 files changed, 4 insertions, 4 deletions

diff --git a/test/map/map.test.cpp b/test/map/map.test.cpp
index 0eebc93f32..9e37f97b8b 100644
--- a/test/map/map.test.cpp
+++ b/test/map/map.test.cpp
@@ -316,7 +316,7 @@ TEST(Map, DefaultBoundOptions) {
 
     EXPECT_EQ(*bounds.minZoom, util::MIN_ZOOM);
     EXPECT_EQ(*bounds.maxZoom, util::DEFAULT_MAX_ZOOM);
-    EXPECT_EQ(*bounds.bounds, LatLngBounds::unbounded());
+    EXPECT_EQ(*bounds.bounds, LatLngBounds());
 }
 
 TEST(Map, MapOptions) {
@@ -1053,4 +1053,4 @@ TEST(Map, NoHangOnMissingImage) {
     test.map.jumpTo(test.map.getStyle().getDefaultCamera());
     // The test passes if the following call does not hang.
     test.frontend.render(test.map);
-}
\ No newline at end of file
+}
diff --git a/test/map/transform.test.cpp b/test/map/transform.test.cpp
index 84fdb06b21..95fb744206 100644
--- a/test/map/transform.test.cpp
+++ b/test/map/transform.test.cpp
@@ -609,7 +609,7 @@ TEST(Transform, LatLngBounds) {
     transform.jumpTo(CameraOptions().withCenter(LatLng()).withZoom(transform.getState().getMaxZoom()));
 
     // Default bounds.
-    ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds::unbounded());
+    ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds());
     ASSERT_EQ(transform.getLatLng(), nullIsland);
 
     // Invalid bounds.
@@ -617,7 +617,7 @@ TEST(Transform, LatLngBounds) {
         transform.setLatLngBounds(LatLngBounds::empty());
         ASSERT_TRUE(false) << "Should throw";
     } catch (...) {
-        ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds::unbounded());
+        ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds());
     }
 
     transform.jumpTo(CameraOptions().withCenter(sanFrancisco));