sprintf.c: rb_inspect returns a string

* sprintf.c (rb_str_format): rb_inspect() always returns a string.
  rb_obj_as_string() has no more effect.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51040 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

sprintf.c

@@ -707,8 +707,12 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt)
 		VALUE arg = GETARG();
 		long len, slen;
 
-		if (*p == 'p') arg = rb_inspect(arg);
-		str = rb_obj_as_string(arg);
+		if (*p == 'p') {
+		    str = rb_inspect(arg);
+		}
+		else {
+		    str = rb_obj_as_string(arg);
+		}
 		if (OBJ_TAINTED(str)) tainted = 1;
 		len = RSTRING_LEN(str);
 		rb_str_set_len(result, blen);