Ticket #8771: system-typo.patch

common/system.h

@@ -129 +129 @@
                  * the frontend code is very inefficient in doing screen updates. So
                  * the frontend might do a lot of fullscreen blits even though only a
                  * tiny portion of the actual screen data changed. In that case, it
-                 * might pay off for the backend to compute which parts actual changed,
+                 * might pay off for the backend to compute which parts actually changed,
                  * and then only mark those as dirty.
                  * Implementing this is purely optional, and no harm should arise
                  * when not doing so (except for decreased speed in said frontends).