Exit when failed to validate the shasum (#6852)

tools/coverage/report.sh

@@ -47,7 +47,7 @@ VERSION=$(grep -o 'VERSION=\"[0-9\.]*\"' codecov | cut -d'"' -f2)
 for i in 1 256 512
 do
   shasum -a $i -c --ignore-missing <(curl -s "https://raw.githubusercontent.com/codecov/codecov-bash/${VERSION}/SHA${i}SUM") ||
-  shasum -a $i -c <(curl -s "https://raw.githubusercontent.com/codecov/codecov-bash/${VERSION}/SHA${i}SUM")
+  shasum -a $i -c <(curl -s "https://raw.githubusercontent.com/codecov/codecov-bash/${VERSION}/SHA${i}SUM") || exit 0
 done
 
 bash codecov -X fix -f /tmp/report-*.xml || true