(c-end-of-statement-1): Wrap backward-up-list in a c-safe call so no

(c-end-of-statement-1): Wrap backward-up-list in a c-safe call so no
error results when buffer contains only a comment and point is at eob.

(c-inside-bracelist-p): Add a test to the enum list test so that enum
in a k&r arg decl doesn't confuse handling of the function body.