Hi,
This changes the behavior of the example but makes it consistent with
the example in fgetln(3) and many other manuals.

Comments? OK?

Index: getdelim.3
===================================================================
RCS file: /cvs/src/lib/libc/stdio/getdelim.3,v
retrieving revision 1.4
diff -u -p -r1.4 getdelim.3
--- getdelim.3  4 Apr 2016 19:23:52 -0000       1.4
+++ getdelim.3  22 Jul 2017 08:51:16 -0000
@@ -124,7 +124,7 @@ while ((linelen = getline(\*[Am]line, \*
 
 free(line);
 if (ferror(fp))
-       perror("getline");
+       err(1, "getline");
 .Ed
 .Sh ERRORS
 .Bl -tag -width [EOVERFLOW]

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