common: logging: backend: Close the file after exceeding the write limit

There's no point in keeping the file open after the write limit is exceeded. This allows the file to be committed to the disk shortly after it is closed and avoids redundantly checking whether or not the write limit is exceeded.

src/common/logging/backend.cpp

@@ -171,19 +171,22 @@ FileBackend::FileBackend(const std::filesystem::path& filename) {
 FileBackend::~FileBackend() = default;
 
 void FileBackend::Write(const Entry& entry) {
+    if (!file->IsOpen()) {
+        return;
+    }
+
     using namespace Common::Literals;
-    // prevent logs from going over the maximum size (in case its spamming and the user doesn't
-    // know)
+    // Prevent logs from exceeding a set maximum size in the event that log entries are spammed.
     constexpr std::size_t MAX_BYTES_WRITTEN = 100_MiB;
     constexpr std::size_t MAX_BYTES_WRITTEN_EXTENDED = 1_GiB;
 
-    if (!file->IsOpen()) {
-        return;
-    }
+    const bool write_limit_exceeded =
+        bytes_written > MAX_BYTES_WRITTEN_EXTENDED ||
+        (bytes_written > MAX_BYTES_WRITTEN && !Settings::values.extended_logging);
 
-    if (Settings::values.extended_logging && bytes_written > MAX_BYTES_WRITTEN_EXTENDED) {
-        return;
-    } else if (!Settings::values.extended_logging && bytes_written > MAX_BYTES_WRITTEN) {
+    // Close the file after the write limit is exceeded.
+    if (write_limit_exceeded) {
+        file->Close();
         return;
     }