[NFC] Remove whitespaces in llvm/CMakeLists.txt

Author: GkvJwa

llvm/CMakeLists.txt

@@ -864,7 +864,7 @@ if(MSVC)
   if (BUILD_SHARED_LIBS)
     message(FATAL_ERROR "BUILD_SHARED_LIBS options is not supported on Windows.")
   endif()
- else()
+else()
   option(LLVM_BUILD_LLVM_C_DYLIB "Build libllvm-c re-export library (Darwin only)" OFF)
 endif()