core: Fix clang build

Recent changes to the build system that made more warnings be flagged as
errors caused building via clang to break.

Fixes #4795

src/core/hle/service/bcat/backend/backend.h

@@ -53,10 +53,10 @@ struct DeliveryCacheProgressImpl {
     ResultCode result = RESULT_SUCCESS;
     DirectoryName current_directory;
     FileName current_file;
-    s64 current_downloaded_bytes; ///< Bytes downloaded on current file.
-    s64 current_total_bytes;      ///< Bytes total on current file.
-    s64 total_downloaded_bytes;   ///< Bytes downloaded on overall download.
-    s64 total_bytes;              ///< Bytes total on overall download.
+    u64 current_downloaded_bytes; ///< Bytes downloaded on current file.
+    u64 current_total_bytes;      ///< Bytes total on current file.
+    u64 total_downloaded_bytes;   ///< Bytes downloaded on overall download.
+    u64 total_bytes;              ///< Bytes total on overall download.
     INSERT_PADDING_BYTES(
         0x198); ///< Appears to be unused in official code, possibly reserved for future use.
 };

src/core/hle/service/bcat/backend/boxcat.cpp

@@ -3,7 +3,16 @@
 // Refer to the license.txt file included.
 
 #include <fmt/ostream.h>
+
+#if defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wsign-conversion"
+#endif
 #include <httplib.h>
+#if defined(__GNUC__)
+#pragma GCC diagnostic pop
+#endif
+
 #include <mbedtls/sha256.h>
 #include <nlohmann/json.hpp>
 #include "common/hex_util.h"

src/core/hle/service/bcat/module.cpp

@@ -454,7 +454,8 @@ private:
         write_size = std::min<u64>(write_size, files.size());
         std::vector<DeliveryCacheDirectoryEntry> entries(write_size);
         std::transform(
-            files.begin(), files.begin() + write_size, entries.begin(), [](const auto& file) {
+            files.begin(), files.begin() + static_cast<s64>(write_size), entries.begin(),
+            [](const auto& file) {
                 FileName name{};
                 std::memcpy(name.data(), file->GetName().data(),
                             std::min(file->GetName().size(), name.size()));