message: Fix typo extra parenthesis
diff: @@ -68,7 +68,7 @@ namespace omp {
  namespace rcm {
  -#if defined(__x86_64__) && (defined(__GNUG__) || defined(__clang__)))
  +#if defined(__x86_64__) && (defined(__GNUG__) || defined(__clang__))
  #define GKO_MM_PAUSE() asm("rep nop" :::);
  #else
  #define GKO_MM_PAUSE() // No equivalent instruction.
  