fix [2448319] out of bounds array index in fog
diff --git a/include/private/pixelflinger/ggl_context.h b/include/private/pixelflinger/ggl_context.h
index 8a36fa9..2d7fdcf 100644
--- a/include/private/pixelflinger/ggl_context.h
+++ b/include/private/pixelflinger/ggl_context.h
@@ -285,8 +285,7 @@
 };
 
 struct fog_state_t {
-    uint8_t     color[3];
-    uint8_t     reserved;
+    uint8_t     color[4];
 };
 
 struct logic_op_state_t {