mdocml: Use mandoc.1's error codes (we use them internally).

mdocml: Use mandoc.1's error codes (we use them internally).

[kristaps]

Log Message:
-----------
Use mandoc.1's error codes (we use them internally).

Modified Files:
--------------
    mdocml:
        makewhatis.1

Revision Data
-------------
Index: makewhatis.1
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/makewhatis.1,v
retrieving revision 1.11
retrieving revision 1.12
diff -Lmakewhatis.1 -Lmakewhatis.1 -u -p -r1.11 -r1.12
--- makewhatis.1
+++ makewhatis.1
@@ -146,7 +146,24 @@ A
 database of indexed file-names.
 .El
 .Sh EXIT STATUS
-.Ex -std
+The
+.Nm
+utility exits with one of the following values:
+.Pp
+.Bl -tag -width Ds -compact
+.It 0
+No errors occurred.
+.It 5
+Invalid command line arguments were specified.
+No input files have been read.
+.It 6
+An operating system error occurred, for example memory exhaustion or an
+error accessing input files.
+Such errors cause
+.Nm
+to exit at once, possibly in the middle of parsing or formatting a file.
+The output databases are corrupt and should be removed .
+.El
 .Sh SEE ALSO
 .Xr mandoc 1
 .Sh AUTHORS
--
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