print/qpdf: Update to 7.1.1 (a followup release)

Fixed bugs that were left by the first commit for bug#225226
that updated qpdf to 7.1.0:
* build breaks when previous version is installed:
  https://github.com/qpdf/qpdf/issues/176
* error: reinterpret_cast from 'nullptr_t' to 'char *':
  https://github.com/qpdf/qpdf/issues/177

PR:		225226
Reported by:	several users
Approved by:	adamw (mentor)
Differential Revision:	https://reviews.freebsd.org/D14201

print/qpdf/Makefile

@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	qpdf
-PORTVERSION=	7.1.0
+PORTVERSION=	7.1.1
 CATEGORIES=	print
 MASTER_SITES=	SF
 

print/qpdf/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1516116745
-SHA256 (qpdf-7.1.0.tar.gz) = 27054bfb83a4f4f70053c6d4c2de5e18ddf60c9a8edbce219ac1bdcf03f16a2e
-SIZE (qpdf-7.1.0.tar.gz) = 7097479
+TIMESTAMP = 1517797977
+SHA256 (qpdf-7.1.1.tar.gz) = 8a0dbfa000a5c257abbc03721c7be277920fe0fcff08202b61c9c2464eedf2fa
+SIZE (qpdf-7.1.1.tar.gz) = 7099282

print/qpdf/files/patch-libqpdf_Pl__PNGFilter.cc

@@ -1,12 +0,0 @@
-Needed on 10.4 only.
-Upstream is aware of the issue: https://github.com/qpdf/qpdf/pull/172
-
---- libqpdf/Pl_PNGFilter.cc.orig	2018-01-15 01:09:20 UTC
-+++ libqpdf/Pl_PNGFilter.cc
-@@ -1,5 +1,6 @@
- #include <qpdf/Pl_PNGFilter.hh>
- #include <qpdf/QTC.hh>
-+#include <cstdlib>
- #include <stdexcept>
- #include <string.h>
- #include <limits.h>

print/qpdf/files/patch-libqpdf_QUtil.cc

@@ -1,13 +0,0 @@
-Workaround for https://github.com/qpdf/qpdf/issues/177
-
---- libqpdf/QUtil.cc.orig	2018-01-29 18:08:43 UTC
-+++ libqpdf/QUtil.cc
-@@ -354,7 +354,7 @@ void
- QUtil::setLineBuf(FILE* f)
- {
- #ifndef _WIN32
--    setvbuf(f, reinterpret_cast<char *>(NULL), _IOLBF, 0);
-+    setvbuf(f, reinterpret_cast<char *>(0), _IOLBF, 0);
- #endif
- }
- 

print/qpdf/pkg-plist

@@ -32,7 +32,7 @@ include/qpdf/Types.h
 include/qpdf/qpdf-c.h
 lib/libqpdf.so
 lib/libqpdf.so.18
-lib/libqpdf.so.18.2.0
+lib/libqpdf.so.18.2.1
 libdata/pkgconfig/libqpdf.pc
 man/man1/fix-qdf.1.gz
 man/man1/qpdf.1.gz