[core] Introduce `Resource::minimumUpdateInterval`

Introduce `Resource::minimumUpdateInterval` and consider it in the online file source.

The `minimumUpdateInterval` is used to throttle the requests, which were initiated due to resource expiration.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mbgl/util/http_timeout.cpp b/src/mbgl/util/http_timeout.cpp
index 04842e48be..cf4085d5dc 100644
--- a/src/mbgl/util/http_timeout.cpp
+++ b/src/mbgl/util/http_timeout.cpp
@@ -32,11 +32,11 @@ Duration errorRetryTimeout(Response::Error::Reason failedRequestReason, uint32_t
 Duration expirationTimeout(optional<Timestamp> expires, uint32_t expiredRequests) {
     if (expiredRequests) {
         return Seconds(1u << std::min(expiredRequests - 1, 31u));
-    } else if (expires) {
+    }
+    if (expires) {
         return std::max(Seconds::zero(), *expires - util::now());
-    } else {
-        return Duration::max();
     }
+    return Duration::max();
 }
 
 } // namespace http