More fixes for Mac build

.github/workflows/sdrangel.yml

@@ -130,6 +130,14 @@ jobs:
         id: get_filename
         run: echo "filename=$(grep CPACK_PACKAGE_FILE_NAME build/CMakeCache.txt | cut -d "=" -f2)" >> $GITHUB_OUTPUT
       - name: Build SDRangel on Mac
+        run: |
+          cd build
+          make -j3
+      - name: Stop XProtectBehaviorService
+        run: |
+          echo "killing XProject as it can interfere with hdiutil"; sudo pkill -9 XProtect >/dev/null || true;
+          echo "waiting..."; while pgrep XProtect; do sleep 3; done;
+      - name: Build DMG
         run: |
           cd build
           make package -j3