Fixed syntax errors
diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index bb009a6..9b46d69 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -3086,7 +3086,7 @@
         return static_cast<uint8_t>(pos);

     return UINT8_MAX;

 #elif defined __GNUC__ || defined __clang__

-    return static_cast<uint8_t>__builtin_ffsll(mask)) - 1U;

+    return static_cast<uint8_t>(__builtin_ffsll(mask)) - 1U;

 #else

     uint8_t pos = 0;

     uint64_t bit = 1;

@@ -3108,7 +3108,7 @@
         return static_cast<uint8_t>(pos);

     return UINT8_MAX;

 #elif defined __GNUC__ || defined __clang__

-    return static_cast<uint8_t>__builtin_ffsl(mask)) - 1U;

+    return static_cast<uint8_t>(__builtin_ffsl(mask)) - 1U;

 #else

     uint8_t pos = 0;

     uint32_t bit = 1;