Add an assortment of missing frees, and one missing file close. Mostly

on error paths, although the one in PSFTP's wildcard_iterate will come
up in normal usage.

[originally from svn r9916]

psftp.c

@@ -922,6 +922,7 @@ int wildcard_iterate(char *filename, int (*func)(void *, char *), void *ctx)
 		printf("%s: canonify: %s\n", newname, fxp_error());
 		ret = 0;
 	    }
+            sfree(newname);
 	    matched = TRUE;
 	    ret &= func(ctx, cname);
 	    sfree(cname);