Item2387: an invalid revision tag must not fall back to revision 1, i…

…t must fall back to the "latest" revision. that is cleanUpRevID('') -> 0

git-svn-id: http://svn.foswiki.org/trunk@5601 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

core/lib/Foswiki/Store.pm

@@ -103,7 +103,7 @@ sub cleanUpRevID {
     $rev =~ s/[^\d]//g;     # digits only
 
     #ill formed rev's are still valid (see MetaTests::test_BadRevisionInfo)
-    $rev = '1' if ($rev eq '');
+    $rev = 0 if ($rev eq '');
 
     return Foswiki::Sandbox::untaintUnchecked($rev);
 }