fixed a bug where a field which was set to "Don't use" would generate an error.
fixed a bug where a field which was set to "Don't use" would generate an error.

korelogic/importcsv,brendo/importcsv,brendo/importcsv,stuartgpalmer/importcsv,TwistedInteractive/importcsv,stuartgpalmer/importcsv,TwistedInteractive/importcsv,korelogic/importcsv