[PATCH v2 2/2] ui/cocoa.m: Remove unnecessary NSAutoreleasePools

[Peter Maydell <peter.maydell@linaro.org>]

In commit 6e657e64cdc478 in 2013 we added some autorelease pools to
deal with complaints from macOS when we made calls into Cocoa from
threads that didn't have automatically created autorelease pools.
Later on, macOS got stricter about forbidding cross-thread Cocoa
calls, and in commit 5588840ff77800e839d8 we restructured the code to
avoid them.  This left the autorelease pool creation in several
functions without any purpose; delete it.

We still need the pool in cocoa_refresh() for the clipboard related
code which is called directly there.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 ui/cocoa.m | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/ui/cocoa.m b/ui/cocoa.m
index 5ed1495552a..b6e70e9134d 100644
--- a/ui/cocoa.m
+++ b/ui/cocoa.m
@@ -1976,8 +1976,6 @@ int main (int argc, char **argv) {
 static void cocoa_update(DisplayChangeListener *dcl,
                          int x, int y, int w, int h)
 {
-    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
-
     COCOA_DEBUG("qemu_cocoa: cocoa_update\n");
 
     dispatch_async(dispatch_get_main_queue(), ^{
@@ -1993,14 +1991,11 @@ static void cocoa_update(DisplayChangeListener *dcl,
         }
         [cocoaView setNeedsDisplayInRect:rect];
     });
-
-    [pool release];
 }
 
 static void cocoa_switch(DisplayChangeListener *dcl,
                          DisplaySurface *surface)
 {
-    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
     pixman_image_t *image = surface->image;
 
     COCOA_DEBUG("qemu_cocoa: cocoa_switch\n");
@@ -2015,7 +2010,6 @@ static void cocoa_switch(DisplayChangeListener *dcl,
         [cocoaView updateUIInfo];
         [cocoaView switchSurface:image];
     });
-    [pool release];
 }
 
 static void cocoa_refresh(DisplayChangeListener *dcl)
-- 
2.25.1