Fix for the error handling of the "foreach task -R struct.member"

format if an invalid structure and/or member is used as an argument.
Without the patch, the command will display the expected error
indicating "task: invalid structure member reference", but then will
be followed by a stream of "task: recursive temporary file usage"
error messages.
(anderson@redhat.com)

symbols.c

@@ -7680,7 +7680,7 @@ parse_for_member_extended(struct datatype_member *dm,
 	free_structure(root);
 
 	if (!found)
-		error(FATAL, "invalid data structure member reference: %s\n",
+		error(INFO, "invalid data structure member reference: %s\n",
 			dm->member);
 }