mandoc: Initializers for file-scope static variables should be

[schwarze@mandoc.bsd.lv]

Log Message:
-----------
Initializers for file-scope static variables should be compile-time
constants, and while stderr is a compile-time constant in OpenBSD,
Kelvin Sherlock <ksherlock at gmail dot com> reports that it isn't
on some other systems, for example on FreeBSD or Linux.
So do the initialization by calling mandoc_msg_setoutfile() 
from main() instead.

Modified Files:
--------------
    mandoc:
        main.c
        mandoc_msg.c

Revision Data
-------------
Index: main.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/main.c,v
retrieving revision 1.316
retrieving revision 1.317
diff -Lmain.c -Lmain.c -u -p -r1.316 -r1.317
--- main.c
+++ main.c
@@ -1,7 +1,7 @@
 /*	$Id$ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2012, 2014-2018 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2012, 2014-2019 Ingo Schwarze <schwarze@openbsd.org>
  * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
@@ -148,6 +148,7 @@ main(int argc, char *argv[])
 	setprogname(progname);
 #endif
 
+	mandoc_msg_setoutfile(stderr);
 	if (strncmp(progname, "mandocdb", 8) == 0 ||
 	    strcmp(progname, BINM_MAKEWHATIS) == 0)
 		return mandocdb(argc, argv);
Index: mandoc_msg.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/mandoc_msg.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -Lmandoc_msg.c -Lmandoc_msg.c -u -p -r1.4 -r1.5
--- mandoc_msg.c
+++ mandoc_msg.c
@@ -240,7 +240,7 @@ static	const char *const type_message[MA
 	"ignoring macro in table",
 };
 
-static	FILE		*fileptr = stderr;
+static	FILE		*fileptr = NULL;
 static	const char	*filename = NULL;
 static	enum mandocerr	 min_type = MANDOCERR_MAX;
 static	enum mandoclevel rc = MANDOCLEVEL_OK;
--
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