Description of problem:
If PFLOGSUMM=0, SRPMS can't be created

Version-Release number of selected component (if applicable):
postfix-2.2.8-1.2.src.rpm


How reproducible:
Always

Steps to Reproduce:
1. rpm -ihv postfix-2.2.8-1.2.src.rpm
2. change spec file
-%define PFLOGSUMM 1
+%define PFLOGSUMM 0
3. rpm -bs postfix.spec
  
Actual results:
$ rpmbuild -bs postfix.spec
error: Bad file: /mnt/rpmbuild/SOURCES/pflogsumm-%{pflogsumm_ver}.tar.gz: No
such file or directory

Expected results:
No such message

Fix:
@@ -62,8 +73,10 @@

 # Sources 50-99 are upstream [patch] contributions

+%if %{PFLOGSUMM}
 # Postfix Log Entry Summarizer: http://jimsun.linxnet.com/postfix_contrib.html
 Source53: http://jimsun.linxnet.com/downloads/pflogsumm-%{pflogsumm_ver}.tar.gz
+%endif

 # Sources >= 100 are config files