[Bug 38337] clang compiling warnings

https://bugs.winehq.org/show_bug.cgi?id=38337

--- Comment #22 from Sergey Isakov  ---
/Volumes/MacHD/Users/sergey/Documents/Projects/winehq/dlls/winemac.drv/cocoa_status_item.m:100:20:
warning: instance method '-discardEventsPassingTest:' not found (return type
defaults to 'id') [-Wobjc-method-access]
            [queue discardEventsPassingTest:^BOOL (macdrv_event* event){
                   ^~~~~~~~~~~~~~~~~~~~~~~~
/Volumes/MacHD/Users/sergey/Documents/Projects/winehq/dlls/winemac.drv/cocoa_event.h:40:12:
note: receiver is instance of class declared here
@interface WineEventQueue : NSObject
           ^
1 warning generated.
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