localrepo.status: move fixup concatenation inside if block for clarity

clean += fixup only makes sense if fixup is not empty; it should
be inside the "if fixup" test.

mercurial/localrepo.py

@@ -1064,11 +1064,11 class localrepository(repo.repository):
                     else:
                         fixup.append(f)
 
+                # update dirstate for files that are actually clean
+                if fixup:
                 if listclean:
                     clean += fixup
 
-                # update dirstate for files that are actually clean
-                if fixup:
                     try:
                         # updating the dirstate is optional
                         # so we don't wait on the lock