common.h in zstd-ruby-1.5.2.3

- old
+ new

@@ -2,7 +2,14 @@
 #define ZSTD_RUBY_H 1
 
 #include "ruby.h"
 #include "./libzstd/zstd.h"
 
+static int convert_compression_level(VALUE compression_level_value)
+{
+  if (NIL_P(compression_level_value)) {
+    return ZSTD_CLEVEL_DEFAULT;
+  }
+  return NUM2INT(compression_level_value);
+}
 
 #endif /* ZSTD_RUBY_H */