# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1540536891 -10800
# Node ID 307a52e0dc04f7c4e39e1104ac298522065dee63
# Parent  f41bc7203a16968fd2a00a7782517ebd9ae2f880
Make a internal copy of the const DMImageConvSpec in dmWriteIFFImage().

diff -r f41bc7203a16 -r 307a52e0dc04 tools/libgfx.c
--- a/tools/libgfx.c	Thu Oct 25 20:19:53 2018 +0300
+++ b/tools/libgfx.c	Fri Oct 26 09:54:51 2018 +0300
@@ -2066,13 +2066,16 @@
 }
 
 
-int dmWriteIFFImage(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec)
+int dmWriteIFFImage(DMResource *fp, const DMImage *img, const DMImageConvSpec *cpspec)
 {
     Uint32 idsig;
     DMIFF iff;
     Uint8 *buf = NULL;
     size_t bufLen;
     int res = DMERR_OK;
+    DMImageConvSpec pspec, *spec = &pspec;
+
+    memcpy(&pspec, cpspec, sizeof(DMImageConvSpec));
 
     // XXX: Non-paletted ILBM not supported!
     if (!spec->paletted)