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Diffstat (limited to 'Build/source/libs/potrace/potrace-src/src/bitmap_io.h')
-rw-r--r--Build/source/libs/potrace/potrace-src/src/bitmap_io.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/Build/source/libs/potrace/potrace-src/src/bitmap_io.h b/Build/source/libs/potrace/potrace-src/src/bitmap_io.h
index 04b1c9ca1d2..5bfa5af0c3a 100644
--- a/Build/source/libs/potrace/potrace-src/src/bitmap_io.h
+++ b/Build/source/libs/potrace/potrace-src/src/bitmap_io.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2015 Peter Selinger.
+/* Copyright (C) 2001-2017 Peter Selinger.
This file is part of Potrace. It is free software and it is covered
by the GNU General Public License. See the file COPYING for details. */
@@ -13,7 +13,7 @@
/* Note that bitmaps are stored bottom to top, i.e., the first
scanline is the bottom-most one */
-extern char *bm_read_error;
+extern const char *bm_read_error;
int bm_read(FILE *f, double blacklevel, potrace_bitmap_t **bmp);
void bm_writepbm(FILE *f, potrace_bitmap_t *bm);