Fixed a potential error in the release errhand function

changes.txt

@@ -1,5 +1,5 @@
 LOVE 0.9.0 [Baby Inspector]
---------------
+---------------------------
 
   * Added --fused command line argument, to simulate fusing.
   * Added liblove.

src/scripts/boot.lua

@@ -801,7 +801,7 @@ end
 function love.releaseerrhand(msg)
 	print("An error has occured, the game has been stopped.")
 
-	if not love.graphics or not love.event or not love.graphics.isCreated() then
+	if not love.window or not love.graphics or not love.event or not love.graphics.isCreated() then
 		return
 	end
 

src/scripts/boot.lua.h

@@ -1862,11 +1862,12 @@ const unsigned char boot_lua[] =
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