Fix typo to fix AWB issues

src/process_pipeline.c

@@ -459,7 +459,7 @@ process_aaa()
                 float b = state_proc.stats.avg_b;
 
                 // Revert the current gains set on the preview
-                b /= state_proc.red;
+                r /= state_proc.red;
                 b /= state_proc.blue;
 
                 float t = 2.0f;