# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1530004808 -10800
# Node ID 74405ff6bc4af8a5bab8bbb098ba4e30c358b6da
# Parent  636d3c8bcd35379a2815d8015d281a1384cf8fcc
Cleanups.

diff -r 636d3c8bcd35 -r 74405ff6bc4a tools/libgfx.c
--- a/tools/libgfx.c	Tue Jun 26 05:03:55 2018 +0300
+++ b/tools/libgfx.c	Tue Jun 26 12:20:08 2018 +0300
@@ -1975,9 +1975,10 @@
 {
     if (mode == DMODE_LIT)
     {
-        if (offs - *l_offs > *r_count || flush)
+        size_t l_count = offs - *l_offs;
+        if (l_count > *r_count || flush)
         {
-            size_t count = (offs - *l_offs) - *r_count;
+            size_t count = l_count - *r_count;
             Sint8 tmp = count - 1;
 
             if (!dmf_write_byte(fp, tmp) ||
@@ -2086,10 +2087,9 @@
             }
         }
 
-        // Write mask data
+        // Write mask data, if any
         if (iff->bmhd.masking == IFF_MASK_HAS_MASK)
         {
-            // Encode bitplane
             dmMemset(buf, 0, bufLen);
 
             for (int xc = 0; xc < img->width; xc++)