Upgrade to libxml 2.9.2 and libxslt 1.1.28

third_party/libxml/src/testAutomata.c

 /*
  * testRegexp.c: simple module for testing regular expressions
  *
  * See Copyright for the status of this software.
  *
  * Daniel Veillard <veillard@redhat.com>
  */
 
 #include "libxml.h"
 #ifdef LIBXML_AUTOMATA_ENABLED
@@ skipping 52 matching lines @@
         fclose(input);
         return;
     }
     ret = 0;
 
     while (fgets(expr, 4500, input) != NULL) {
         if (expr[0] == '#')
             continue;
         len = strlen(expr);
         len--;
-        while ((len >= 0) && 
+        while ((len >= 0) &&
                ((expr[len] == '\n') || (expr[len] == '\t') ||
                 (expr[len] == '\r') || (expr[len] == ' '))) len--;
-        expr[len + 1] = 0;      
+        expr[len + 1] = 0;
         if (len >= 0) {
             if ((am != NULL) && (expr[0] == 't') && (expr[1] == ' ')) {
                 char *ptr = &expr[2];
                 int from, to;
 
                 from = scanNumber(&ptr);
                 if (*ptr != ' ') {
                     xmlGenericError(xmlGenericErrorContext,
                             "Bad line %s\n", expr);
                     break;
@@ skipping 213 matching lines @@
     return(0);
 }
 
 #else
 #include <stdio.h>
 int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
     printf("%s : Automata support not compiled in\n", argv[0]);
     return(0);
 }
 #endif /* LIBXML_AUTOMATA_ENABLED */