Simple patch for fixing an arthimetic exception that can occur when using the --scale flag in onscripter-en

onscripter-scale-fix.patch

diff --git a/resize_image.cpp b/resize_image.cpp
index af8866f..ecca1c4 100644
--- a/resize_image.cpp
+++ b/resize_image.cpp
@@ -203,7 +203,11 @@ void resizeImage( unsigned char *dst_buffer, int dst_width, int dst_height, int
                 x >>= 3;
                 //avoid resampling from outside the current cell
                 int ix = mx;
-                if (((x+1)%cell_width)==0) ix = 0;
+                if (cell_width == 0) {
+                    ix = 0;
+                } else if (((x+1)%cell_width)==0) {
+                    ix = 0;
+                }
 
                 int k = tmp_total_width * y + x * byte_per_pixel;