fixed warning

tests/make_png/bitmap.c

@@ -170,6 +170,8 @@ void Make_PNG(FT_Bitmap* bitmap,char* name,int i,int render_mode){
                   PIXEL * pixel = Pixel_At (& fruit, x, y);
                   p = (y * bitmap->pitch ) + x;
 
+                  value = bitmap->buffer[p];
+                  
                   pixel->red = 255- value;
                   pixel->green = 255- value;
                   pixel->blue = 255- value;

tests/make_png/make_png.c

@@ -126,7 +126,7 @@ int main (int argc, char const *argv[])
 										                size,
 										                render_type);
 
-	for (i = 0; i <50; ++i)
+	for (i = 0; i <face->num_glyphs; ++i)
 	{
 		error = FT_Load_Glyph( face,
                            i, 
@@ -145,7 +145,7 @@ int main (int argc, char const *argv[])
 
   	if (bitmap->width == 0 || bitmap->rows == 0)
     {
-       continue;
+      continue;
     }
 
     FT_Bitmap       target;