!2 Fix syntax error when macro is not defined

From: @peijiankang 
Reviewed-by: @dou33 
Signed-off-by: @dou33

qt6-qtshadertools.spec

@@ -6,7 +6,7 @@
 Summary: Qt6 - Qt Shader Tools module builds on the SPIR-V Open Source Ecosystem
 Name:    qt6-%{qt_module}
 Version: 6.5.0
-Release: 1
+Release: 2
 
 License: LGPLv3
 Url:     http://www.qt.io
@@ -19,7 +19,7 @@ BuildRequires: ninja-build
 BuildRequires: qt6-qtbase-devel >= %{version}
 BuildRequires: qt6-qtbase-private-devel
 BuildRequires: pkgconfig(xkbcommon) >= 0.4.1
-Requires: %{_qt6}%{?_isa} = %{_qt6_version}
+%{?_qt6:Requires: %{_qt6}%{?_isa} = %{_qt6_version}}
 
 %description
 %{summary}.
@@ -94,8 +94,11 @@ popd
 %{_qt6_libdir}/pkgconfig/Qt6ShaderTools.pc
 
 %changelog
+* Mon May 22 2023 peijiankang <peijiankang@kylinos.cn> - 6.5.0-2
+- Fix syntax error when macro is not defined
+
 * Fri Apr 28 2023 EastDong <xudong23@iscas.ac.cn> - 6.5.0-1
 - update package
 
 * Fri Nov 11 2022 Jingwiw <wangjingwei@iscas.ac.cn> - 6.4.0-1
-- init package
+- init package

qt6-qtshadertools.yaml

@@ -1,4 +1,4 @@
 version_control: git
-src_repo: https://code.qt.io/cgit/qt/qtshadertools.git
+src_repo: https://code.qt.io/qt/qtshadertools.git
 tag_prefix: "^v"
 separator: "."