Set array capacity

Author: marselester

src/decoder.zig

@@ -191,7 +191,7 @@ pub const Decoder = struct {
                     const Value = std.meta.FieldType(DecodedType.KV, .value);
                     var map = DecodedType.init(allocator);
                     const map_len = field.size;
-                    try map.ensureTotalCapacity(@intCast(map_len));
+                    try map.ensureTotalCapacity(map_len);
 
                     for (0..map_len) |_| {
                         const key = try self.decodeValue(allocator, Key);
@@ -209,8 +209,9 @@ pub const Decoder = struct {
                     }
 
                     const Value = std.meta.Child(DecodedType.Slice);
-                    var array = std.ArrayList(Value).init(allocator);
                     const array_len = field.size;
+                    var array = try std.ArrayList(Value).initCapacity(allocator, array_len);
+
                     for (0..array_len) |_| {
                         const value = try self.decodeValue(allocator, Value);
                         try array.append(value);

src/maxminddb.zig

@@ -17,7 +17,7 @@ test {
 }
 
 fn expectEqualMaps(
-    map: std.hash_map.StringHashMap([]const u8),
+    map: std.StringArrayHashMap([]const u8),
     keys: []const []const u8,
     values: []const []const u8,
 ) !void {