This could happen if proxy_manager_get_remunknown returns S_FALSE, so 
fix the check of the return code to match that below.

ole32: Fix a potentially confusing combination of conditional and bitwise or operators by adding extra brackets.

Based on a patch by Erich Hoover.

(Spotted by Dan Kegel with valgrind).

    
This shouldn't be needed anymore now that exceptions are not handled
on the signal stack, and signal mask handling is broken on Mac OS.