[-] BO : fix postProcess override on AdminImportController

When we override the constucteur of AdminImport to add an import type and PS_ADVANCED_STOCK_MANAGEMENT is off, switch index is undefined for "Supply Orders" and "Supply Order Details".
Default case of switch is never used.
Merge pull request #737 from codeurWeb/patch-3

[-] BO : fix postProcess override on AdminImportController