Apply coding conventions

include/fmt/format.h

@@ -1186,9 +1186,7 @@ inline auto do_count_digits(uint64_t n) -> int {
 // except for n == 0 in which case count_digits returns 1.
 FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int {
 #ifdef FMT_BUILTIN_CLZLL
-  if (!is_constant_evaluated()) {
-    return do_count_digits(n);
-  }
+  if (!is_constant_evaluated()) return do_count_digits(n);
 #endif
   return count_digits_fallback(n);
 }