[core] Fix google-default-arguments errors in header files

As reported by clang-tidy-8.

2 files changed, 2 insertions, 2 deletions

diff --git a/include/mbgl/storage/file_source.hpp b/include/mbgl/storage/file_source.hpp
index 3306d8d76a..0ce88981a5 100644
--- a/include/mbgl/storage/file_source.hpp
+++ b/include/mbgl/storage/file_source.hpp
@@ -48,7 +48,7 @@ public:
     // Allows to forward response from one source to another.
     // Optionally, callback can be provided to receive notification for forward
     // operation.
-    virtual void forward(const Resource&, const Response&, std::function<void()> = {}) {}
+    virtual void forward(const Resource&, const Response&, std::function<void()>) {}
 
     // When a file source supports consulting a local cache only, it must return true.
     // Cache-only requests are requests that aren't as urgent, but could be useful, e.g.
diff --git a/include/mbgl/style/sources/geojson_source.hpp b/include/mbgl/style/sources/geojson_source.hpp
index f08f897bea..b728b340ea 100644
--- a/include/mbgl/style/sources/geojson_source.hpp
+++ b/include/mbgl/style/sources/geojson_source.hpp
@@ -50,7 +50,7 @@ public:
 
     // SuperclusterData
     virtual Features getChildren(std::uint32_t) = 0;
-    virtual Features getLeaves(std::uint32_t, std::uint32_t limit = 10u, std::uint32_t offset = 0u) = 0;
+    virtual Features getLeaves(std::uint32_t, std::uint32_t limit, std::uint32_t offset) = 0;
     virtual std::uint8_t getClusterExpansionZoom(std::uint32_t) = 0;
 
     virtual std::shared_ptr<Scheduler> getScheduler() { return nullptr; }