opal_cr is disabled on Windows, but we don't want to stop the program here, make it continue to run.

This commit was SVN r14847.

opal/runtime/opal_cr.c

@@ -201,7 +201,7 @@ int opal_cr_init(void )
                                 &opal_cr_signal);
 #else
     opal_output( 0, "This feature is disabled on Windows" );
-    exit(-1);
+    return 0;
 #endif  /* __WINDOWS__ */
 
     opal_output_verbose(10, opal_cr_output,