use num2int in StringIO#ungetc

lopex · lopex · commit ddfee9d980c7 · 2018-01-15T23:58:04.000+01:00
diff --git a/core/src/main/java/org/jruby/ext/stringio/StringIO.java b/core/src/main/java/org/jruby/ext/stringio/StringIO.java
@@ -1069,7 +1069,7 @@ public IRubyObject ungetc(ThreadContext context, IRubyObject arg) {
 
         if (arg.isNil()) return arg;
         if (arg instanceof RubyInteger) {
-            int len, cc = ((RubyInteger) arg).getIntValue();
+            int len, cc = RubyNumeric.num2int(arg);
             byte[] buf = new byte[16];
 
             enc = getEncoding();
