bug 453892: fix prbool bugs in xpconnect. r=jorendorff

js/src/xpconnect/src/xpcprivate.h

@@ -1896,7 +1896,7 @@ public:
 #ifdef GET_IT
 #undef GET_IT
 #endif
-#define GET_IT(f_) const {return (JSBool)(mClassInfoFlags & nsIClassInfo:: f_ );}
+#define GET_IT(f_) const {return !!(mClassInfoFlags & nsIClassInfo:: f_ );}
 
     JSBool ClassIsSingleton()           GET_IT(SINGLETON)
     JSBool ClassIsThreadSafe()          GET_IT(THREADSAFE)

js/src/xpconnect/src/xpcwrappednative.cpp

@@ -2892,7 +2892,7 @@ XPCWrappedNative::HandlePossibleNameCaseError(XPCCallContext& ccx,
         nsCRT::free(newStr);
         if(newJSStr && (set ?
              set->FindMember(STRING_TO_JSVAL(newJSStr), &member, &localIface) :
-                        (JSBool)NS_PTR_TO_INT32(iface->FindMember(STRING_TO_JSVAL(newJSStr)))))
+                        NS_PTR_TO_INT32(iface->FindMember(STRING_TO_JSVAL(newJSStr)))))
         {
             // found it!
             const char* ifaceName = set ?