this is currently an int - we shouldn't restrict it unless required

This commit was SVN r7895.

ompi/mca/pml/ob1/pml_ob1.c

@@ -52,7 +52,7 @@ mca_pml_ob1_t mca_pml_ob1 = {
     mca_pml_ob1_probe,
     mca_pml_ob1_start,
     32768,
-    (0xffff)
+    INT_MAX
     }
 };