Reduced CPU usage (and improved performance) for the nogame screen

src/scripts/boot.lua

@@ -1330,6 +1330,7 @@ function love.nogame()
 		local img_h = rain.img_h
 
 		batch:clear()
+		batch:bind()
 
 		for i = 0,17 do
 			for j = 0,17 do
@@ -1340,6 +1341,8 @@ function love.nogame()
 				batch:add(x, y)
 			end
 		end
+
+		batch:unbind()
 	end
 
 	function love.update(dt)

src/scripts/boot.lua.h

@@ -4833,6 +4833,7 @@ const unsigned char boot_lua[] =
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@@ -4850,6 +4851,7 @@ const unsigned char boot_lua[] =
 	0x29, 0x0a,
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 	0x09, 0x09, 0x65, 0x6e, 0x64, 0x0a,
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