Fix a number of small issues highlighted by Coverity

Signed-off-by: Jonathan Dieter <jdieter@gmail.com>

.gitignore

@@ -32,3 +32,4 @@
 /zchunk-1.1.15.tar.gz
 /zchunk-1.2.0.tar.gz
 /zchunk-1.2.1.tar.gz
+/zchunk-1.2.2.tar.gz

sources

@@ -1 +1 @@
-SHA512 (zchunk-1.2.1.tar.gz) = 0f84358b820b98c89aecfac5cd2e3e28447e18b8cf2f10376334c36f353d6a7dac15e0e82e317a2f0a94dacab0f1fb04ea6b69b2ebe03b7bafacd5a1d7e64655
+SHA512 (zchunk-1.2.2.tar.gz) = 3c7f0a9236a23eb10fe9145f4b2b72ceab274f0baff2791a7d2fbe002ffd90b30bba0e2b532f9a0563a2a29d2dfe7a11932b069ffa9c9a9ada2fd39444b74ec3

zchunk.spec

@@ -1,5 +1,5 @@
 Name:           zchunk
-Version:        1.2.1
+Version:        1.2.2
 Release:        1%{?dist}
 Summary:        Compressed file format that allows easy deltas
 License:        BSD and MIT
@@ -84,6 +84,9 @@ install contrib/gen_xml_dictionary %{buildroot}%{_libexecdir}/zck_gen_xml_dictio
 %{_includedir}/zck.h
 
 %changelog
+* Mon Apr 18 2022 Jonathan Dieter <jdieter@gmail.com> - 1.2.2-1
+- Fixed a number of small issues highlighted by Coverity
+
 * Sat Mar 12 2022 Jonathan Dieter <jdieter@gmail.com> - 1.2.1-1
 - Fixed bug that limited size of file that could be compressed using zchunk to 2GB
 - Fixed memory leak