fixed error when given page in pagination was out of range in changelog view

rhodecode/controllers/changelog.py

@@ -90,9 +90,13 b' class ChangelogController(BaseRepoContro'
 
         revcount = min(repo_size, size)
         offset = 1 if p == 1 else  ((p - 1) * revcount + 1)
-        rev_start = repo.revisions.index(repo.revisions[(-1 * offset)])
+        try:
+            rev_start = repo.revisions.index(repo.revisions[(-1 * offset)])
+        except IndexError:
+            rev_start = repo.revisions.index(repo.revisions[-1])
         rev_end = max(0, rev_start - revcount)
 
+
         data = []
         if repo.alias == 'git':
             for _ in xrange(rev_end, rev_start):