diff --git a/src/pngsize.c b/src/pngsize.c
index 1a7b4378948d818ca6de1897eb6c66acfc51da9a..5cac36c158fdc3d5a2d375b0198ee28aa531e567 100644 (file)
--- a/src/pngsize.c
+++ b/src/pngsize.c
#ifdef PNG_SETJMP_SUPPORTED
# define png_jmpbuf(png_ptr) ((png_ptr)->PNG_jmpbuf)
#else
-#ifdef jmpbuf
-#undef jmpbuf
-#endif
+#ifdef jmpbuf
+#undef jmpbuf
+#endif
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
#endif
#endif