libcom_err: Declare prototypes for et_list_lock/unlock in com_err.h

Define the prototypes for et_list_lock() and et_list_unlock() in
com_err.h.  This promotes better error checking and avoids warnings
when compiling the library and programs that call these functions.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
1 file changed