Merge pull request #16 from nwg-piotr/fixnofs

fix crash on a category button click while file search turned off (`-nofs`)

main.go

@@ -19,7 +19,7 @@ import (
 	"github.com/gotk3/gotk3/gtk"
 )
 
-const version = "0.1.7"
+const version = "0.1.8"
 
 var (
 	appDirs         []string

uicomponents.go

@@ -146,7 +146,9 @@ func setUpCategoriesButtonBox() *gtk.EventBox {
 				w := b.GetAllocatedWidth()
 				b.SetImagePosition(gtk.POS_TOP)
 				b.SetSizeRequest(w, 0)
-				fileSearchResultWrapper.Hide()
+				if fileSearchResultWrapper != nil {
+					fileSearchResultWrapper.Hide()
+				}
 			})
 		}
 	}