Defining the count variable in order to eliminate the following warning ...

...generated when guessing types:

Traceback (most recent call last):
  File "/Users/khowe/bin/csv2sqlite.py", line 113, in <module>
    convert(*sys.argv[1:])
  File "/Users/khowe/bin/csv2sqlite.py", line 17, in convert
    types = _guess_types(fo)
  File "/Users/khowe/bin/csv2sqlite.py", line 98, in _guess_types
    if colresult[_type] == count + 1:
UnboundLocalError: local variable 'count' referenced before assignment