fix a lint-o

rts/Exception.cmm

@@ -329,7 +329,7 @@ raisezh_fast
     /* ToDo: currently this is a hack.  Would be much better if
      * the info was only displayed for an *uncaught* exception.
      */
-    if (RtsFlags_ProfFlags_showCCSOnException(RtsFlags) != 0) {
+    if (RtsFlags_ProfFlags_showCCSOnException(RtsFlags) != 0::I32) {
       foreign "C" fprintCCS_stderr(W_[CCCS] "ptr");
     }
 #endif