Ignore blank lines and whitespaces for validation of the xml files

Author: brianvarskonst

.github/workflows/ci.yml

@@ -30,9 +30,9 @@ jobs:
             - run: xmllint --noout --schema vendor/squizlabs/php_codesniffer/phpcs.xsd Brianvarskonst/ruleset.xml
             - run: xmllint --noout --schema vendor/squizlabs/php_codesniffer/phpcs.xsd phpcs.Brianvarskonst.xml
             - run: xmllint --noout --schema vendor/squizlabs/php_codesniffer/phpcs.xsd phpcs.xml.dist
-            - run: diff -B Brianvarskonst/ruleset.xml <(xmllint --format Brianvarskonst/ruleset.xml)
-            - run: diff -B phpcs.brianvarskonst.xml <(xmllint --format phpcs.brianvarskonst.xml)
-            - run: diff -B phpcs.xml.dist <(xmllint --format phpcs.xml.dist)
+            - run: diff -Bw Brianvarskonst/ruleset.xml <(xmllint --format Brianvarskonst/ruleset.xml)
+            - run: diff -Bw phpcs.brianvarskonst.xml <(xmllint --format phpcs.brianvarskonst.xml)
+            - run: diff -Bw phpcs.xml.dist <(xmllint --format phpcs.xml.dist)
             - name: Stylecheck against Brianvarskonst itself
               run: vendor/bin/phpcs
     run-tests: