macdeploy: combine appname & -zip arguments

diff --git a/cmake/module/Maintenance.cmake b/cmake/module/Maintenance.cmake
index 5f4b1d8a..57c3a794 100644
--- a/cmake/module/Maintenance.cmake
+++ b/cmake/module/Maintenance.cmake
@@ -100,7 +100,7 @@ function(add_macos_deploy_target)
     if(CMAKE_HOST_APPLE)
       add_custom_command(
         OUTPUT ${PROJECT_BINARY_DIR}/${osx_volname}.zip
-        COMMAND Python3::Interpreter ${PROJECT_SOURCE_DIR}/contrib/macdeploy/macdeployqtplus ${macos_app} ${osx_volname} -translations-dir=${QT_TRANSLATIONS_DIR} -zip
+        COMMAND Python3::Interpreter ${PROJECT_SOURCE_DIR}/contrib/macdeploy/macdeployqtplus ${macos_app} -translations-dir=${QT_TRANSLATIONS_DIR} -zip=${osx_volname}
         DEPENDS ${PROJECT_BINARY_DIR}/${macos_app}/Contents/MacOS/Bitcoin-Qt
         VERBATIM
       )
@@ -113,7 +113,7 @@ function(add_macos_deploy_target)
     else()
       add_custom_command(
         OUTPUT ${PROJECT_BINARY_DIR}/dist/${macos_app}/Contents/MacOS/Bitcoin-Qt
-        COMMAND ${CMAKE_COMMAND} -E env OBJDUMP=${CMAKE_OBJDUMP} $<TARGET_FILE:Python3::Interpreter> ${PROJECT_SOURCE_DIR}/contrib/macdeploy/macdeployqtplus ${macos_app} ${osx_volname} -translations-dir=${QT_TRANSLATIONS_DIR}
+        COMMAND ${CMAKE_COMMAND} -E env OBJDUMP=${CMAKE_OBJDUMP} $<TARGET_FILE:Python3::Interpreter> ${PROJECT_SOURCE_DIR}/contrib/macdeploy/macdeployqtplus ${macos_app} -translations-dir=${QT_TRANSLATIONS_DIR}
         DEPENDS ${PROJECT_BINARY_DIR}/${macos_app}/Contents/MacOS/Bitcoin-Qt
         VERBATIM
       )
diff --git a/contrib/macdeploy/macdeployqtplus b/contrib/macdeploy/macdeployqtplus
index ba532d77..571485e5 100755
--- a/contrib/macdeploy/macdeployqtplus
+++ b/contrib/macdeploy/macdeployqtplus
@@ -390,12 +390,11 @@ Note, that the "dist" folder will be deleted before deploying on each run.
 Optionally, Qt translation files (.qm) can be added to the bundle.""")
 
 ap.add_argument("app_bundle", nargs=1, metavar="app-bundle", help="application bundle to be deployed")
-ap.add_argument("appname", nargs=1, metavar="appname", help="name of the app being deployed")
 ap.add_argument("-verbose", nargs="?", const=True, help="Output additional debugging information")
 ap.add_argument("-no-plugins", dest="plugins", action="store_false", default=True, help="skip plugin deployment")
 ap.add_argument("-no-strip", dest="strip", action="store_false", default=True, help="don't run 'strip' on the binaries")
 ap.add_argument("-translations-dir", nargs=1, metavar="path", default=None, help="Path to Qt's translations. Base translations will automatically be added to the bundle's resources.")
-ap.add_argument("-zip", nargs="?", const="", metavar="zip", help="create a .zip containing the app bundle")
+ap.add_argument("-zip", nargs=1, metavar="zip", help="create a .zip containing the app bundle")
 
 config = ap.parse_args()
 
@@ -404,7 +403,6 @@ verbose = config.verbose
 # ------------------------------------------------
 
 app_bundle = config.app_bundle[0]
-appname = config.appname[0]
 
 if not os.path.exists(app_bundle):
     sys.stderr.write(f"Error: Could not find app bundle \"{app_bundle}\"\n")
@@ -416,10 +414,6 @@ if os.path.exists("dist"):
     print("+ Removing existing dist folder +")
     shutil.rmtree("dist")
 
-if os.path.exists(appname + ".zip"):
-    print("+ Removing existing .zip +")
-    os.unlink(appname + ".zip")
-
 # ------------------------------------------------
 
 target = os.path.join("dist", "Bitcoin-Qt.app")
@@ -499,7 +493,13 @@ if platform.system() == "Darwin":
 # ------------------------------------------------
 
 if config.zip is not None:
-    shutil.make_archive('{}'.format(appname), format='zip', root_dir='dist', base_dir='Bitcoin-Qt.app')
+    name = config.zip[0]
+
+    if os.path.exists(name + ".zip"):
+        print("+ Removing existing .zip +")
+        os.unlink(name + ".zip")
+
+    shutil.make_archive('{}'.format(name), format='zip', root_dir='dist', base_dir='Bitcoin-Qt.app')
 
 # ------------------------------------------------