[JENKINS-35098] Work around core misfeature when using 1.642.x or 1.6…

…51.x.

src/main/java/org/jenkinsci/plugins/workflow/job/WorkflowRun.java

@@ -51,6 +51,7 @@
 import hudson.model.listeners.RunListener;
 import hudson.model.listeners.SCMListener;
 import hudson.scm.ChangeLogSet;
+import hudson.scm.RepositoryBrowser;
 import hudson.scm.SCM;
 import hudson.scm.SCMRevisionState;
 import hudson.security.ACL;
@@ -674,7 +675,7 @@ public boolean hasntStartedYet() {
                 if (co.changelogFile != null && co.changelogFile.isFile()) {
                     try {
                         ChangeLogSet<? extends ChangeLogSet.Entry> changeLogSet =
-                                co.scm.createChangeLogParser().parse(this, co.scm.getEffectiveBrowser(), co.changelogFile);
+                                co.scm.createChangeLogParser().parse(this, getEffectiveBrowser(co.scm), co.changelogFile);
                         if (!changeLogSet.isEmptySet()) {
                             changeSets.add(changeLogSet);
                         }
@@ -687,6 +688,12 @@ public boolean hasntStartedYet() {
         return changeSets;
     }
 
+    /** Replacement for {@link SCM#getEffectiveBrowser} to work around JENKINS-35098. TODO 2.7.3+ delete */
+    private static RepositoryBrowser<?> getEffectiveBrowser(SCM scm) {
+        RepositoryBrowser<?> b = scm.getBrowser();
+        return b != null ? b : scm.guessBrowser();
+    }
+
     @RequirePOST
     public synchronized HttpResponse doStop() {
         Executor e = getOneOffExecutor();