Fix a build issue, and a big endian conversion

fiv-io.c

@@ -1538,9 +1538,11 @@ load_libwebp_frame(WebPAnimDecoder *dec, const WebPAnimInfo *info,
 	if (G_BYTE_ORDER == G_LITTLE_ENDIAN) {
 		memcpy(dst, buf, area * sizeof *dst);
 	} else {
-		uint32_t *src = (uint32_t *) buf;
-		for (uint64_t i = 0; i < area; i++)
-			*dst++ = GUINT32_FROM_LE(*src++);
+		const uint32_t *src = (const uint32_t *) buf;
+		for (uint64_t i = 0; i < area; i++) {
+			uint32_t value = *src++;
+			*dst++ = GUINT32_FROM_LE(value);
+		}
 	}
 
 	// info->bgcolor is not reliable.

meson.build

@@ -166,7 +166,7 @@ tiff_tables = custom_target('tiff-tables.h',
 
 desktops = ['fiv.desktop', 'fiv-browse.desktop']
 iolib = static_library('fiv-io', 'fiv-io.c', 'fiv-io-cmm.c', 'xdg.c',
-	tiff_tables,
+	tiff_tables, config,
 	dependencies : dependencies).extract_all_objects(recursive : true)
 exe = executable('fiv', 'fiv.c', 'fiv-view.c', 'fiv-context-menu.c',
 	'fiv-browser.c', 'fiv-sidebar.c', 'fiv-thumbnail.c', 'fiv-collection.c',