fix downgrade error

curl.spec

@@ -6,7 +6,7 @@
 
 Name:           curl
 Version:        7.71.1
-Release:        2
+Release:        3
 Summary:        Curl is used in command lines or scripts to transfer data
 License:        MIT
 URL:            https://curl.haxx.se/
@@ -45,6 +45,7 @@ Summary:	A library for getting files from web servers
 Requires:	libssh >= %{libssh_version} libpsl >= %{libpsl_version}
 Requires:       openssl-libs >= 1:%{openssl_version}
 Provides:	libcurl-full = %{version}-%{release} 
+Conflicts:	curl < 7.66.0-3
 
 %description -n libcurl
 A library for getting files from web servers.
@@ -159,6 +160,12 @@ rm -rf ${RPM_BUILD_ROOT}%{_libdir}/libcurl.la
 %{_mandir}/man3/*
 
 %changelog
+* Tue Jan 5 2021 gaihuiying <gaihuiying1@huawei.com> - 7.71.1-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:fix downgrade error
+
 * Mon Dec 28 2020 liuxin <liuxin264@huawei.com> - 7.71.1-2
 - Type:cves
 - ID:CVE-2020-8231