AK: Add Bitmap::is_null()

This class has a null state but there was no API to check for it.

1 files changed, 2 insertions, 0 deletions

diff --git a/AK/Bitmap.h b/AK/Bitmap.h
index 9c7a468829..8d8deda091 100644
--- a/AK/Bitmap.h
+++ b/AK/Bitmap.h
@@ -148,6 +148,8 @@ public:
         return count;
     }
 
+    bool is_null() const { return !m_data; }
+
     u8* data() { return m_data; }
     const u8* data() const { return m_data; }