[libxml2] Add explicit casts in testchar.c

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 5948abfe993ce85dc7d1b2945828b0dd09bdf1f7
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Tue Jan 25 01:59:03 2022 +0100

    Add explicit casts in testchar.c
    
    Avoids integer conversion warnings with UBSan.

 testchar.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/testchar.c b/testchar.c
index 6866a175..51e4acfc 100644
--- a/testchar.c
+++ b/testchar.c
@@ -32,7 +32,7 @@ static void testDocumentRangeByte1(xmlParserCtxtPtr ctxt, char *document,
        lastError = 0;
        xmlCtxtReset(ctxt);
 
-        data[0] = i;
+        data[0] = (char) i;
 
        res = xmlReadMemory(document, len, "test", NULL, 0);
 
@@ -73,8 +73,8 @@ static void testDocumentRangeByte2(xmlParserCtxtPtr ctxt, char *document,
        lastError = 0;
        xmlCtxtReset(ctxt);
 
-        data[0] = i;
-        data[1] = j;
+        data[0] = (char) i;
+        data[1] = (char) j;
 
        res = xmlReadMemory(document, len, "test", NULL, 0);
 
@@ -248,7 +248,7 @@ static void testCharRangeByte1(xmlParserCtxtPtr ctxt, char *data) {
     data[2] = 0;
     data[3] = 0;
     for (i = 0;i <= 0xFF;i++) {
-        data[0] = i;
+        data[0] = (char) i;
        ctxt->charset = XML_CHAR_ENCODING_UTF8;
 
        lastError = 0;
@@ -275,8 +275,8 @@ static void testCharRangeByte2(xmlParserCtxtPtr ctxt, char *data) {
     data[3] = 0;
     for (i = 0x80;i <= 0xFF;i++) {
        for (j = 0;j <= 0xFF;j++) {
-           data[0] = i;
-           data[1] = j;
+           data[0] = (char) i;
+           data[1] = (char) j;
            ctxt->charset = XML_CHAR_ENCODING_UTF8;
 
            lastError = 0;
@@ -353,8 +353,8 @@ static void testCharRangeByte3(xmlParserCtxtPtr ctxt, char *data) {
     for (i = 0xE0;i <= 0xFF;i++) {
     for (j = 0;j <= 0xFF;j++) {
     for (k = 0;k < 6;k++) {
-       data[0] = i;
-       data[1] = j;
+       data[0] = (char) i;
+       data[1] = (char) j;
        K = lows[k];
        data[2] = (char) K;
        value = (K & 0x3F) + ((j & 0x3F) << 6) + ((i & 0xF) << 12);
@@ -440,8 +440,8 @@ static void testCharRangeByte4(xmlParserCtxtPtr ctxt, char *data) {
     for (j = 0;j <= 0xFF;j++) {
     for (k = 0;k < 6;k++) {
     for (l = 0;l < 6;l++) {
-       data[0] = i;
-       data[1] = j;
+       data[0] = (char) i;
+       data[1] = (char) j;
        K = lows[k];
        data[2] = (char) K;
        L = lows[l];