Bug 934509. Make sure to not accidentally pass 0 to ClearTimeoutOrInterval, even if someone calls clearInterval(0) on an Xray for a Window. r=peterv

dom/base/nsGlobalWindow.cpp

@@ -7005,7 +7005,7 @@ NS_IMETHODIMP
 nsGlobalWindow::ClearInterval(int32_t aHandle)
 {
   ErrorResult rv;
-  ClearTimeoutOrInterval(aHandle, rv);
+  ClearInterval(aHandle, rv);
 
   return rv.ErrorCode();
 }