Add “b” so windows reads in binary mode

test/rive_file_reader.hpp

diff --git a/test/rive_file_reader.hpp b/test/rive_file_reader.hpp
index f62e1e8..191e931 100644
--- a/test/rive_file_reader.hpp
+++ b/test/rive_file_reader.hpp
@@ -12,7 +12,7 @@
 
 public:
     RiveFileReader(const char path[]) {
-        FILE* fp = fopen(path, "r");
+        FILE* fp = fopen(path, "rb");
         REQUIRE(fp != nullptr);
 
         fseek(fp, 0, SEEK_END);