fix calculation when calculation is not actually needed

koreader · Nov 25, 2014 · 6565760 · 6565760
1 parent 2b2f704
commit 6565760
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ffi/framebuffer.lua b/ffi/framebuffer.lua
@@ -134,6 +134,7 @@ end
 
 function fb:calculateRealCoordinates(x, y)
 
+    if not (x or y) then return end
     if not self.viewport then return x, y end
 
     --[[