Fix type mismatch

Backported from NetXMS project.

src/jid.c

@@ -33,7 +33,7 @@ char *xmpp_jid_new(xmpp_ctx_t *ctx, const char *node,
 				    const char *resource)
 {
     char *result;
-    int len,nlen,dlen,rlen;
+    size_t len, nlen, dlen, rlen;
 
     /* jid must at least have a domain */
     if (domain == NULL) return NULL;
@@ -157,7 +157,7 @@ char *xmpp_jid_resource(xmpp_ctx_t *ctx, const char *jid)
 {
     char *result = NULL;
     const char *c;
-    int len;
+    size_t len;
 
     c = strchr(jid, '/');
     if (c != NULL)  {

src/parser_expat.c

@@ -43,7 +43,7 @@ static char *_xml_name(xmpp_ctx_t *ctx, const char *nsname)
 {
     char *result = NULL;
     const char *c;
-    int len;
+    size_t len;
 
     c = strchr(nsname, NAMESPACE_SEP);
     if (c == NULL) return xmpp_strdup(ctx, nsname);

src/sasl.c

@@ -75,7 +75,7 @@ static char *_make_string(xmpp_ctx_t *ctx, const char *s, const unsigned len)
 static char *_make_quoted(xmpp_ctx_t *ctx, const char *s)
 {
     char *result;
-    int len = strlen(s);
+    size_t len = strlen(s);
 
     result = xmpp_alloc(ctx, len + 3);
     if (result != NULL) {