fix tests with unsigned char (upstream PR 109)

Resolves: rhbz#1473266

expat-2.2.3-fixtests.patch

@@ -0,0 +1,14 @@
+
+https://github.com/libexpat/libexpat/pull/109
+
+--- libexpat-R_2_2_3/expat/tests/runtests.c.fixtests
++++ libexpat-R_2_2_3/expat/tests/runtests.c
+@@ -5671,7 +5671,7 @@ static int XMLCALL
+ prefix_converter(void *UNUSED_P(data), const char *s)
+ {
+     /* If the first byte is 0xff, raise an error */
+-    if (s[0] == -1)
++    if (s[0] == (char)-1)
+         return -1;
+     /* Just add the low bits of the first byte to the second */
+     return (s[1] + (s[0] & 0x7f)) & 0x01ff;

expat.spec

@@ -5,6 +5,7 @@ Name: expat
 Version: %(echo %{unversion} | sed 's/_/./g')
 Release: 1%{?dist}
 Source: https://github.com/libexpat/libexpat/archive/R_%{unversion}.tar.gz#/expat-%{version}.tar.gz
+Patch0: expat-2.2.3-fixtests.patch
 URL: https://libexpat.github.io/
 License: MIT
 BuildRequires: autoconf, libtool, xmlto
@@ -35,6 +36,7 @@ Install it if you need to link statically with expat.
 
 %prep
 %setup -q -n libexpat-R_%{unversion}/expat
+%patch0 -p2 -b .fixtests
 sed -i '
 s/docbook2x-man/xmlto man --skip-validation/
 /^xmlwf.1: XMLWF/d
@@ -76,6 +78,9 @@ make check
 %{_libdir}/lib*.a
 
 %changelog
+* Fri Aug  4 2017 Joe Orton <jorton@redhat.com> - 2.2.3-2
+- fix tests with unsigned char (upstream PR 109)
+
 * Thu Aug  3 2017 Joe Orton <jorton@redhat.com> - 2.2.3-1
 - update to 2.2.3 (#1473266)