[CMake] Fix mismatched endif warning

Caused by llvm#116701.

Seems like a lot of arguments to repeat, so just use a plain endif().

Author: DavidSpickett

llvm/cmake/modules/GetHostTriple.cmake

@@ -55,6 +55,6 @@ function( get_host_triple var )
       endif( NOT TT_RV EQUAL 0 )
       set( value ${TT_OUT} )
     endif()
-  endif( MSVC )
+  endif()
   set( ${var} ${value} PARENT_SCOPE )
 endfunction( get_host_triple var )