config-ix.cmake: Tweak stray endif(...) to suppress a warning in CMake.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190502 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 7f338d8..30168c1 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -313,7 +313,7 @@
       message(STATUS "Adding LZMA as a dep to XML2 for cross-compilation, make sure liblzma.a is available.")
       set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARIES} "-llzma")
     endif ()
-  endif ( CMAKE_CROSSCOMPILING )
+  endif ()
 endif ()
 
 include(CheckCXXCompilerFlag)