.dot files sometimes rejected by writer

because CWW8 appears twice, once for normal .doc and once for .dot. So a .dot
files is tested twice if it's supported by the WW8 filter. Depending on the
(effectively arbitrary) order they appear in the list .dots may fail the "is a
normal non template .doc" test after the "is a template .dot" test and get
rejected as a CWW8 candidate.

Change-Id: I88aec29fdd5f9ec4dd4ad2813ff3c6b8fa5c5461
diff --git a/sw/source/filter/basflt/iodetect.cxx b/sw/source/filter/basflt/iodetect.cxx
index 8fd07cb..d26ec7c 100644
--- a/sw/source/filter/basflt/iodetect.cxx
+++ b/sw/source/filter/basflt/iodetect.cxx
@@ -260,6 +260,12 @@ sal_Bool SwIoSystem::IsFileFilter(SfxMedium& rMedium, const String& rFmtName)
                    }
                }
            }
            //The same underlying filter can appear multiple times in the
            //filter list, e.g. CWW8 filter twice, once for .doc and once for
            //.dot.  We just care here if its either, not enforce that it's
            //both which would be a bit of an odd requirement
            if (bRet)
                break;
        }

        pFltr = aIter.Next();