Fix Code Coverage workflow: handle gcov mismatch errors

- Use newer 'branch_coverage' instead of deprecated 'lcov_branch_coverage'
- Add --ignore-errors mismatch,gcov,inconsistent to handle exception tag mismatches
- Add --rc geninfo_unexecuted_blocks=1 to handle unexecuted block warnings
- Fixes: 'mismatched exception tag' error in lstate.h

Author: Peter Neiss

.github/workflows/coverage.yml

@@ -42,20 +42,24 @@ jobs:
         lcov --capture \
           --directory build \
           --output-file coverage.info \
-          --rc lcov_branch_coverage=1
+          --rc branch_coverage=1 \
+          --rc geninfo_unexecuted_blocks=1 \
+          --ignore-errors mismatch,gcov,inconsistent
 
         # Filter out system headers and test files
         lcov --remove coverage.info \
           '/usr/*' \
           '*/build/*' \
           '*/testes/*' \
           --output-file coverage_filtered.info \
-          --rc lcov_branch_coverage=1
+          --rc branch_coverage=1 \
+          --ignore-errors mismatch,gcov,inconsistent
 
         # Generate HTML report
         genhtml coverage_filtered.info \
           --output-directory coverage_html \
-          --rc lcov_branch_coverage=1
+          --rc branch_coverage=1 \
+          --ignore-errors mismatch
 
         # Print summary
         lcov --list coverage_filtered.info