Update cmake.lua

Author: Chi-EEE

xmake/modules/package/tools/cmake.lua

@@ -1155,7 +1155,7 @@ function _get_cmake_generator(package, opt)
         if not cmake_generator then
             if package:has_tool("cc", "clang_cl") or package:has_tool("cxx", "clang_cl") then
                 cmake_generator = "Ninja"
-            elseif is_subhost("windows") and (package:is_plat("mingw", "wasm")) then
+            elseif is_subhost("windows") and package:is_plat("mingw", "wasm") then
                 local mingw_make = _get_mingw32_make(package)
                 if not mingw_make and find_tool("ninja") then
                     cmake_generator = "Ninja"