* include/ruby/ruby.h (rb_mul_size_overflow): use UNLIKELY

by user side to improve generallity.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sat Apr 23 16:11:39 2016  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* include/ruby/ruby.h (rb_mul_size_overflow): use UNLIKELY
+	  by user side to improve generallity.
+
 Sat Apr 23 16:10:02 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* include/ruby/ruby.h (RB_LIKELY): use prefix in ruby.h.

include/ruby/ruby.h

@@ -1628,10 +1628,10 @@ rb_mul_size_overflow(size_t a, size_t b, size_t max, size_t *c)
 {
 #ifdef DSIZE_T
     DSIZE_T c2 = (DSIZE_T)a * (DSIZE_T)b;
-    if (RB_UNLIKELY(c2 > max)) return 1;
+    if (c2 > max) return 1;
     *c = (size_t)c2;
 #else
-    if (b != 0 && RB_UNLIKELY(a > max / b)) return 1;
+    if (b != 0 && a > max / b) return 1;
     *c = a * b;
 #endif
     return 0;