Merge two CMAKE_MODULE_PATH set calls

CMakeLists.txt

@@ -6,8 +6,6 @@ project(KWin VERSION ${PROJECT_VERSION})
 set(QT_MIN_VERSION "5.15.0")
 set(KF5_MIN_VERSION "5.78")
 
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH})
-
 find_package(ECM 5.38 REQUIRED NO_MODULE)
 
 include(FeatureSummary)
@@ -15,7 +13,7 @@ include(WriteBasicConfigVersionFile)
 include(GenerateExportHeader)
 
 # where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} )
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${ECM_MODULE_PATH})
 
 find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
     Concurrent