[libxml2] Fix handling of mmap errors

[Daniel Veillard <veillard src gnome org>]

commit b98c6a0ac6fc5ddd184498e34bf9deaecb0aa715
Author: Daniel Veillard <veillard redhat com>
Date:   Fri Jul 12 12:08:40 2013 +0800

    Fix handling of mmap errors
    
    https://bugzilla.gnome.org/show_bug.cgi?id=702320
    
    as raised by Gaurav <ya1gaurav gmail com>

 xmllint.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)
---
diff --git a/xmllint.c b/xmllint.c
index 4d464e4..92e6b03 100644
--- a/xmllint.c
+++ b/xmllint.c
@@ -1837,8 +1837,12 @@ static void streamFile(char *filename) {
        if ((fd = open(filename, O_RDONLY)) < 0)
            return;
        base = mmap(NULL, info.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
-       if (base == (void *) MAP_FAILED)
+       if (base == (void *) MAP_FAILED) {
+           close(fd);
+           fprintf(stderr, "mmap failure for file %s\n", filename);
+           progresult = XMLLINT_ERR_RDFILE;
            return;
+       }
 
        reader = xmlReaderForMemory(base, info.st_size, filename,
                                    NULL, options);
@@ -2223,8 +2227,12 @@ static void parseAndPrintFile(char *filename, xmlParserCtxtPtr rectxt) {
        if ((fd = open(filename, O_RDONLY)) < 0)
            return;
        base = mmap(NULL, info.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
-       if (base == (void *) MAP_FAILED)
+       if (base == (void *) MAP_FAILED) {
+           close(fd);
+           fprintf(stderr, "mmap failure for file %s\n", filename);
+           progresult = XMLLINT_ERR_RDFILE;
            return;
+       }
 
        doc = htmlReadMemory((char *) base, info.st_size, filename,
                             NULL, options);
@@ -2339,6 +2347,7 @@ static void parseAndPrintFile(char *filename, xmlParserCtxtPtr rectxt) {
                return;
            base = mmap(NULL, info.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
            if (base == (void *) MAP_FAILED) {
+               close(fd);
                fprintf(stderr, "mmap failure for file %s\n", filename);
                progresult = XMLLINT_ERR_RDFILE;
                return;