bpo-44828: macOS installer: avoid leaving a zombie Save panel in Tk 8.6.12rc1 (GH-29367)

Author: ned-deily

Mac/BuildScript/bpo-44828-filedialog-crash-monterey-8612rc1.patch

@@ -0,0 +1,10 @@
+--- tk8.6.12/macosx/tkMacOSXDialog.c	2021-10-29 17:08:23.000000000 +0000
++++ tk8.6.12-patched/macosx/tkMacOSXDialog.c	2021-11-02 19:04:59.000000000 +0000
+@@ -379,6 +379,7 @@
+ 	    [NSApp tkFilePanelDidEnd:panel
+ 			  returnCode:modalReturnCode
+ 			 contextInfo:callbackInfo ];
++	    [parent endSheet:panel];
+ 	}
+     } else {
+ 	modalReturnCode = [panel runModal];

Mac/BuildScript/build-installer.py

@@ -269,7 +269,7 @@ def library_recipes():
             tcl_checksum='82fd1637c0f7d4b76cb909f8abc373ec'
 
             tk_checksum='d63c3b91b86cd8b6fa54e83ef2c5153e'
-            tk_patches = [ ]
+            tk_patches = ['bpo-44828-filedialog-crash-monterey-8612rc1.patch']
 
 
         result.extend([