[MKDoc-modules] MKDoc::Apache_Cache "uninitialised value" warnings

[Bruno Postle]

MKDoc::Apache_Cache fills the error logs with warnings like this:

    Use of uninitialized value in pattern match (m//) at MKDoc/Apache_Cache.pm line 87.
    Use of uninitialized value in pattern match (m//) at MKDoc/Apache_Cache.pm line 88.
    Use of uninitialized value in length at MKDoc/Apache_Cache.pm line 96.
    Use of uninitialized value in concatenation (.) or string at MKDoc/Apache_Cache.pm line 97.
    Use of uninitialized value in split at MKDoc/Apache_Cache.pm line 222.
    Use of uninitialized value in split at MKDoc/Apache_Cache.pm line 223.
    Use of uninitialized value in substitution (s///) at MKDoc/Apache_Cache.pm line 225.
    Use of uninitialized value in substitution (s///) at MKDoc/Apache_Cache.pm line 226.
    Use of uninitialized value in substitution (s///) at MKDoc/Apache_Cache.pm line 227.
    Use of uninitialized value in substitution (s///) at MKDoc/Apache_Cache.pm line 228.
    Use of uninitialized value in substitution (s///) at MKDoc/Apache_Cache.pm line 229.
    Use of uninitialized value in split at MKDoc/Apache_Cache.pm line 233.
    Use of uninitialized value in split at MKDoc/Apache_Cache.pm line 234.
    Use of uninitialized value in subroutine entry at MKDoc/Apache_Cache.pm line 247.
    Use of uninitialized value in subroutine entry at MKDoc/Apache_Cache.pm line 248.
    Use of uninitialized value in length at MKDoc/Apache_Cache.pm line 250.
    Use of uninitialized value in length at MKDoc/Apache_Cache.pm line 251.
    Use of uninitialized value in join or string at MKDoc/Apache_Cache.pm line 255.
    Use of uninitialized value in join or string at MKDoc/Apache_Cache.pm line 256.

-- 
Bruno