fix: fix SEGV when gc using streaming

Author: SpringMT

ext/zstdruby/streaming_compress.c

@@ -7,15 +7,6 @@ struct streaming_compress_t {
   size_t buf_size;
 };
 
-static void
-streaming_compress_mark(void *p)
-{
-  struct streaming_compress_t *sc = p;
-  // rb_gc_mark((VALUE)sc->ctx);
-  rb_gc_mark(sc->buf);
-  rb_gc_mark(sc->buf_size);
-}
-
 static void
 streaming_compress_free(void *p)
 {
@@ -35,7 +26,7 @@ streaming_compress_memsize(const void *p)
 
 static const rb_data_type_t streaming_compress_type = {
     "streaming_compress",
-    { streaming_compress_mark, streaming_compress_free, streaming_compress_memsize, },
+    { 0, streaming_compress_free, streaming_compress_memsize, },
      0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
@@ -58,7 +49,7 @@ rb_streaming_compress_initialize(int argc, VALUE *argv, VALUE obj)
 
   int compression_level;
   if (NIL_P(compression_level_value)) {
-    compression_level = 0; // The default. See ZSTD_CLEVEL_DEFAULT in zstd_compress.c
+    compression_level = ZSTD_CLEVEL_DEFAULT;
   } else {
     compression_level = NUM2INT(compression_level_value);
   }

ext/zstdruby/streaming_decompress.c

@@ -6,15 +6,6 @@ struct streaming_decompress_t {
   size_t buf_size;
 };
 
-static void
-streaming_decompress_mark(void *p)
-{
-  struct streaming_decompress_t *sd = p;
-  // rb_gc_mark((VALUE)sd->ctx);
-  rb_gc_mark(sd->buf);
-  rb_gc_mark(sd->buf_size);
-}
-
 static void
 streaming_decompress_free(void *p)
 {
@@ -34,7 +25,7 @@ streaming_decompress_memsize(const void *p)
 
 static const rb_data_type_t streaming_decompress_type = {
     "streaming_decompress",
-    { streaming_decompress_mark, streaming_decompress_free, streaming_decompress_memsize, },
+    { 0, streaming_decompress_free, streaming_decompress_memsize, },
      0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };