Enable warnings check in Android builds in 5.x (#157)

Author: asmorkalov

.github/workflows/OCV-PR-5.x-Android.yaml

@@ -80,10 +80,9 @@ jobs:
           cd /home/ci/build
           sed -i 's+https\\://services.gradle.org/distributions/gradle-@[email protected]+file\\:/opt/gradle/gradle-@[email protected]+g' ${{ env.OPENCV_DOCKER_WORKDIR }}/platforms/android/gradle-wrapper/gradle/wrapper/gradle-wrapper.properties.in
           python3 "${{ env.OPENCV_DOCKER_WORKDIR }}/platforms/android/build_sdk.py" --build_doc --config "${{ env.OPENCV_DOCKER_WORKDIR }}/platforms/android/ndk-18-api-level-21.config.py" --sdk_path "$ANDROID_HOME" --ndk_path "$ANDROID_NDK_HOME" /home/ci/build | tee /home/ci/build/build-log.txt
-      # disabled till 4.x->5.x merge in main repo
-      #- name: Warning check
-        #timeout-minutes: 60
-        #run: cd /home/ci/build && python3 /home/ci/scripts/warnings-handling.py
+      - name: Warning check
+        timeout-minutes: 60
+        run: cd /home/ci/build && python3 /home/ci/scripts/warnings-handling.py
       - name: Build local repo from SDK
         timeout-minutes: 60
         run: cd /home/ci/build && "${{ env.OPENCV_DOCKER_WORKDIR }}/platforms/android/build_aar.sh" OpenCV-android-sdk