Don't use regerror() result as format string.

patchutils-format-str.patch

@@ -0,0 +1,21 @@
+diff -up patchutils-0.3.4/src/filterdiff.c.format-str patchutils-0.3.4/src/filterdiff.c
+--- patchutils-0.3.4/src/filterdiff.c.format-str	2017-05-15 11:54:20.203918650 +0100
++++ patchutils-0.3.4/src/filterdiff.c	2017-05-15 11:54:58.631833806 +0100
+@@ -1355,7 +1355,7 @@ read_regex_file (const char *file)
+ 			char errstr[300];
+ 			regerror (err, &regex[num_regex - 1], errstr,
+ 				  sizeof (errstr));
+-			error (EXIT_FAILURE, 0, errstr);
++			error (EXIT_FAILURE, 0, "%s", errstr);
+ 			exit (1);
+ 		}
+ 	}
+@@ -1613,7 +1613,7 @@ int main (int argc, char *argv[])
+ 			char errstr[300];
+ 			regerror (err, &regex[num_regex - 1], errstr,
+ 				  sizeof (errstr));
+-			error (EXIT_FAILURE, 0, errstr);
++			error (EXIT_FAILURE, 0, "%s", errstr);
+ 			exit (1);
+ 		}
+ 	}

patchutils.spec

@@ -1,7 +1,7 @@
 Summary: A collection of programs for manipulating patch files
 Name: patchutils
 Version: 0.3.4
-Release: 6%{?dist}
+Release: 7%{?dist}
 License: GPLv2+
 Group: Applications/System
 URL: http://cyberelk.net/tim/patchutils/
@@ -49,6 +49,9 @@ rm -rf %{buildroot}
 %{_mandir}/*/*
 
 %changelog
+* Mon May 15 2017 Tim Waugh <twaugh@redhat.com> - 0.3.4-7
+- Don't use regerror() result as format string.
+
 * Sat Feb 11 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.4-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild