(svn r18815) -Fix (r18813): adding a single newgrf via the newgrf gui added all newgrfs after the selected one too

src/newgrf_gui.cpp

@@ -382,6 +382,7 @@ public:
 
 					/* Copy GRF details from scanned list */
 					GRFConfig *c = DuplicateGRFConfig(src);
+					c->next = NULL;
 
 					/* Append GRF config to configuration list */
 					*list = c;